Wiring Diagrams for GMC Vandura P3500 (1985-1997)

A/c circuit Heater circuit

4.3l (vin w), a/c circuit 4.3l (vin w), air conditioning circuits Heater circuit

5.7l (vin r), a/c circuit 5.7l (vin r), air conditioning circuits Heater circuit

6.5l (vin f), a/c circuit 6.5l (vin f), air conditioning circuits 6.5l (vin y), a/c circuit 6.5l (vin y), air conditioning circuits Heater circuit

7.4l (vin j), a/c circuit 7.4l (vin j), air conditioning circuits 7.4l (vin n), a/c circuit 7.4l (vin n), air conditioning circuits Heater circuit

Anti-lock brake circuits, commercial chassis Anti-lock brake circuits, motor home chassis

Computer data lines, commercial chassis Computer data lines, motor home chassis

4.3l (vin z), data link connector circuit 4.3l (vin z), data link connector circuit, commercial chassis with a/t 4.3l (vin z), data link connector circuit, commercial chassis with m/t 4.3l (vin z), data link connector circuit, cutaway

5.7l (vin k), data link connector circuit 5.7l (vin k), data link connector circuit, commercial chassis with a/t 5.7l (vin k), data link connector circuit, commercial chassis with m/t 5.7l (vin k), data link connector circuit, cutaway

6.5l (vin f), data link connector circuit 6.5l (vin f), data link connector circuit, commercial chassis 6.5l (vin y), data link connector circuit 6.5l (vin y), data link connector circuit, commercial chassis

7.4l (vin n), data link connector circuit 7.4l (vin n), data link connector circuit, commercial chassis 7.4l (vin n), data link connector circuit, cutaway 7.4l (vin n), data link connector circuit, motorhome chassis

Cooling fan circuit

6.5l (vin f), cooling fan circuit 6.5l (vin y), cooling fan circuit

7.4l (vin j), cooling fan circuit 7.4l (vin n), cooling fan circuit

Cruise control circuit, cutaway chassis Cruise control circuit, motor home chassis

6.5l (vin f), cruise control circuit, motor home chassis

7.4l (vin j), cruise control circuit, motor home chassis 7.4l (vin n), cruise control circuit, motor home chassis

Wiring diagram engine performance 4.3l (vin w)s, commercial chassis Wiring diagram engine performance 4.3l (vin z)s, a/t Wiring diagram engine performance 4.3l (vin z)s, a/t commercial chassis Wiring diagram engine performance 4.3l (vin z)s, a/t except cutaway Wiring diagram engine performance 4.3l (vin z)s, m/t Wiring diagram engine performance 4.3l (vin z)s, m/t commercial chassis

Wiring diagram engine performance 5.7l (vin k)s, a/t commercial chassis and motorhome Wiring diagram engine performance 5.7l (vin k)s, a/t except cutaway Wiring diagram engine performance 5.7l (vin k)s, a/t p/g cutaway (1 of 3) Wiring diagram engine performance 5.7l (vin k)s, a/t p/g cutaway (2 of 3) Wiring diagram engine performance 5.7l (vin k)s, a/t p/g cutaway (3 of 3) Wiring diagram engine performance 5.7l (vin k)s, cutaway chassis (1 of 3) Wiring diagram engine performance 5.7l (vin k)s, cutaway chassis (2 of 3) Wiring diagram engine performance 5.7l (vin k)s, cutaway chassis (3 of 3) Wiring diagram engine performance 5.7l (vin k)s, m/t commercial chassis Wiring diagram engine performance 5.7l (vin r)s, commercial chassis

Wiring diagram engine performance 6.5l (vin f)s Wiring diagram engine performance 6.5l (vin f)s, motor home chassis Wiring diagram engine performance 6.5l (vin y)s, a/t Wiring diagram engine performance 6.5l (vin y)s, a/t commercial chassis Wiring diagram engine performance 6.5l (vin y)s, m/t Wiring diagram engine performance 6.5l (vin y)s, m/t commercial chassis

Wiring diagram engine performance 7.4l (vin j)s, motor home chassis Wiring diagram engine performance 7.4l (vin n)s, a/t commercial chassis and motorhome Wiring diagram engine performance 7.4l (vin n)s, a/t except cutaway Wiring diagram engine performance 7.4l (vin n)s, a/t p/g cutaway (1 of 3) Wiring diagram engine performance 7.4l (vin n)s, a/t p/g cutaway (2 of 3) Wiring diagram engine performance 7.4l (vin n)s, a/t p/g cutaway (3 of 3) Wiring diagram engine performance 7.4l (vin n)s, cutaway chassis (1 of 3) Wiring diagram engine performance 7.4l (vin n)s, cutaway chassis (2 of 3) Wiring diagram engine performance 7.4l (vin n)s, cutaway chassis (3 of 3) Wiring diagram engine performance 7.4l (vin n)s, motor home chassis

Back-up lamps circuit, commercial chassis Backup lamps circuit, commercial chassis Back-up lamps circuit, motor home chassis Backup lamps circuit, motor home chassis Exterior lamps circuit, commercial chassis Exterior lamps circuit, motor home chassis Exterior light circuit, commercial chassis Exterior light circuit, cutaway chassis Exterior light circuit, motor home chassis

Ground distribution circuit, commercial chassis Ground distribution circuit, cutaway chassis Ground distribution circuit, motor home chassis Ground distribution circuit, motorhome chassis

Headlamps circuit, commercial chassis Headlamps circuit, commercial chassis with drl Headlamps circuit, cutaway chassis Headlamps circuit, cutaway chassis with drl Headlamps circuit, motor home chassis Headlamps circuit, motor home chassis with drl Headlight circuit, commercial chassis with drl Headlight circuit, commercial chassis without drl Headlight circuit, cutaway chassis with drl Headlight circuit, cutaway chassis without drl Headlight circuit, motor home chassis with drl Headlight circuit, motor home chassis with dual headlamps drl Headlight circuit, motor home chassis with dual headlamps with drl Headlight circuit, motor home chassis with dual headlamps without drl Headlight circuit, motor home chassis without drl Headlight circuit, motor home chassis with single headlamps drl Headlight circuit, motor home chassis with single headlamps with drl Headlight circuit, motor home chassis with single headlamps without drl

Horn circuit Horn circuit, commercial chassis Horn circuit, commercial & motorhome chassis Horn circuit, cutaway chassis Horn circuit, motor home chassis

Instrument cluster circuit, commercial chassis Instrument cluster circuit, cutaway chassis Instrument cluster circuit, motor home chassis Instrument cluster circuit, motorhome chassis

Interior light circuit, commercial chassis Interior light circuit, cutaway chassis Interior light circuit, motor home chassis Interior light circuit, motorhome chassis

Power distribution circuit, commercial chassis Power distribution circuit, commercial chassis (diesel) (1 of 2) Power distribution circuit, commercial chassis (diesel) (2 of 2) Power distribution circuit, commercial chassis (gasoline) (1 of 2) Power distribution circuit, commercial chassis (gasoline) (2 of 2) Power distribution circuit, cutaway chassis Power distribution circuit, motor home chassis Power distribution circuit, motorhome chassis

Power door lock circuit

Power window circuit Power window circuit, cutaway chassis

Shift interlock circuit, commercial chassis Shift interlock circuit, cutaway chassis Shift interlock circuit, motor home chassis Shift interlock circuit, motorhome chassis

Charging circuit Charging circuit, commercial chassis (diesel) Charging circuit, commercial chassis (gasoline) Charging circuit, cutaway chassis Charging circuit, motor home chassis Starting circuit Starting circuit, commercial chassis (diesel) Starting circuit, commercial chassis (gasoline) Starting circuit, cutaway chassis Starting circuit, motor home chassis

4.3l (vin w), transmission circuit 4.3l (vin w), transmission circuit, 4l80-e 4.3l (vin z), transmission circuit 4.3l (vin z), transmission circuit, 4l80-e

5.7l (vin k), transmission circuit 5.7l (vin k), transmission circuit, 4l80-e 5.7l (vin r), transmission circuit 5.7l (vin r), transmission circuit, 4l80-e

6.5l (vin f), transmission circuit 6.5l (vin f), transmission circuit, 4l80-e 6.5l (vin y), transmission circuit 6.5l (vin y), transmission circuit, 4l80-e

7.4l (vin j), transmission circuit 7.4l (vin j), transmission circuit, 4l80-e 7.4l (vin n), transmission circuit 7.4l (vin n), transmission circuit, 4l80-e

Warning system circuits, commercial chassis Warning system circuits, cutaway chassis Warning system circuits, motor home chassis Warning system circuits, motorhome chassis

Front washer/wiper circuit, commercial chassis Front washer/wiper circuit, cutaway Front washer/wiper circuit, cutaway chassis Front wiper/washer circuit, motor home chassis Provisions for front wiper/washer circuit, commercial chassis Provisions for front wiper/washer circuit, motor home chassis Wiper/washer provisions circuit, motorhome chassis

A/C COMPRESSOR CLUTCH COIL A/C COMPRESSOR CLUTCH COIL DIODE A/C COMPRESSOR CLUTCH DIODE A/T M/T PPL ANTI- LOCK BRAKES SYSTEM PPL ACCY BULB TEST LOCK ACCY BULB TEST LOCK OFF ANTI-LOCK BRAKE SYSTEM ANTI-LOCK BRAKES ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES SYSTEM PPL BATTERY FEED BATTERY FEED 4 WHL LOW SW BATTERY IN BATTERY INPUT GROUND BATTERY JB STUD D) BATTERY JUNCTION BLOCK BREAKOUT FOR GENERATOR) DIODE A/C COMPRESSOR CLUTCH DIODE NETWORK FOR GENERATOR) FROM BREAKOUT FOR GENERATOR) FROM GENERATOR B+ BREAKOUT) FUEL HEATER GENERATOR GENERATOR GENERATOR GENERATOR JUMPER BREAKOUT) HORN CONN BREAKOUT) IGNITION COIL IGNITION COIL DRIVER IN LINE DIODE LEFT HORN LOCK OFF LOCK OFF ON MAP REFERENCE IGNITION FUSED BATTERY FEED PICKUP COIL PPL STARTER FEED PULL- IN COIL HOLD- IN COIL RIGHT FRONT BATTERY LEFT REAR BATTERY RIGHT HORN SECONDARY BATTERY STARTER CIRCUIT TO ALT, ECM-CRANK, TURN-B/U, TRANS, INJECTOR FUSES AND IGNITION COIL TO ALT, ECM-CRNK, TURN-B/U, TRANS, INJ FUSES AND IGNITION COIL TP SIGNAL 5 VOLT REF INJECTOR 2 CONTROL BATTERY FEED W/ DRL HEADLIGHTS SYSTEM ANTI-LOCK BRAKE SYSTEM INTERIOR LIGHTS SYSTEM

3-2 SHIFT SOL FORCE MOTOR 465 1229 FUEL PMP RLY CTRL FORCE MOTOR HI "SERV ENG SOON" IND ENGINE SHUTOFF SOL OUT (ENGINE COMPARTMENT, BEHIND BATTERY (LEFT LOWER (ENGINE HARN, (ENGINE HARN, APPROX (ENGINE HARNESS, (ENGINE HARNESS, 7 CM FROM BREAKOUT FOR (ENGINE HARNESS, 15 CM FROM A/C COMPRESSOR (ENGINE HARNESS, APPROX 9 CM (RIGHT FRONT OF ENGINE AUXILIARY ENGINE COOLANT FAN BLOWER MOTOR BREAKOUT FOR ENGINE COOLANT FAN MOTOR) COOLING FANS, ENGINE CONTROLS SYSTEMS DAYTIME RUNNING LAMPS MODULE WIPER MOTOR ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEMS ENGINE COOLANT FAN MOTOR ENGINE GROUND ENGINE HARNESS, 10 CM FROM BREAKOUT FOR IGNITION COIL) ENGINE ONLY ENGINE SHUTOFF SOLENOID FUEL SOLENOID DRIVER IDLE SPEED CONTROL ACTUATOR LEFT DOOR LOCK MOTOR LEFT FRONT WINDOW MOTOR MOTOR HOME OF ENGINE) PARK BRAKE MOTOR PPL PPL ENGINE CONTROLS SYSTEM PROVISIONS FOR WIPER/ WASHER MOTOR PROVISIONS FOR WIPER/WASHER MOTOR PROVISIONS WINDSHIELD WASHER MOTOR PUMP MOTOR POWER PUMP MOTOR GROUND RIGHT DOOR LOCK MOTOR RIGHT FRONT WINDOW MOTOR SERVICE ENGINE SOON SERVICE ENGINE SOON IND SERVICE ENGINE SOON INDIC SERVICE ENGINE SOON LAMP SHIFT SOL. SHIFT SOL. SHIFT SOL. SHIFT SOL. FORCE MOTOR STARTER MOTOR TIMING STEPPER MOTOR TURBO CHGR PWR VLV CTRL ENGINE SHUTOFF SOL OUT VSS SIGNAL VSS OUTPUT CHECK ENGINE LP CTRL 389 419 W/ DIESEL ENGINE WINDSHIELD WIPER MOTOR BREAKOUT) WINDSHIELD WIPER MOTOR MODULE WIPER MOTOR

EGR ELECTRONIC VACUUM REGULATOR SOLENOID VALVE EGR ELECTRONIC VACUUM REGULATOR VALVE SOLENOID EXHAUST GAS REGULATOR SOLENOID VALVE GENERATOR

6 9 DATA LINK CONNECTOR 9 6 DATA LINK CONNECTOR DATA LINK CONNECTOR DATA LINK CONNECTOR (BEHIND LEFT SIDE SHIPPING FUEL PUMP PRIME CONNECTOR HEADLAMP SWITCH CONNECTOR) PPL DATA LINK CONNECTOR WIPER MOTOR CONNECTOR

BREAKOUT FOR CRUISE CONTROL MODULE, TOWARD RELAYS) BREAKOUT FOR CRUISE CONTROL MODULE, TOWARD VCM) BREAKOUT FOR ENGINE COOLANT FAN MOTOR, TOWARD CRUISE CONTROL MODULE) BREAKOUT FOR GENERATOR, TOWARD CRUISE CONTROL MODULE) CRUISE CONTROL MODULE CRUISE CONTROL MODULE, SWITCH CRUISE CONTROL SWITCH CURISE CONTROL MODULE DAYTIME RUNNING LAMPS CONTROL MODULE DAYTIME RUNNING LAMPS CONTROL RELAY ELECTRONIC BRAKE CONTROL MODULE ELECTRONIC IGNITION CONTROL MODULE FROM BREAKOUT FOR CRUISE CONTROL MODULE, TOWARD ENG) FUEL CONTROL MODULE FUEL PUMP OIL PRESSURE SWITCH FUEL PUMP RELAY POWERTRAIN CONTROL MODULE POWERTRAIN CONTROL MODULE PPL CRUISE CONTROL MODULE TRANSMISSION CONTROL MODULE VEHICLE CONTROL MODULE VEHICLE CONTROL MODULE EXHAUST GAS RECIRCULATION VALVE SOLENOID VEHICLE CONTROL MODULE LINEAR EGR SOLENOID VALVE

ACC RADIO FUSE ALT FUSE AUTO APPLY BRAKE FUSE AUX CIRCUIT BREAKER HTR FUSE AUX FUSE BLANK FUSE BRAKE FUSE CRNK FUSE ECM-CRNK FUSE DASH FUSE BLOCK DASH FUSE BLOCK TRANS FUSE DRL FUSE DRL FUSE PWR ACC CIRCUIT BREAKER ECM 1 FUSE ECM BAT FUSE ECM BAT FUSE ECM CRNK FUSE ECM BATT FUSE ECM CRANK FUSE ECM CRNK FUSE ECM BAT FUSE ECM I FUSE ECM-1 FUSE 20 A ECM-1 FUSE,, GAUGES FUSE ECM-BAT FUSE ACC BUS ECM-BAT FUSE ACC-RADIO FUSE ECM-CRNK FUSE ENG 1 FUSE ENG-1 FUSE 20 A ENG-1 FUSE TRANS FUSE ENG-BAT FUSE FUEL PUMP FUSE FUEL PUMP STOP-HZ FUSE FUSE FUSE BLOCK FUSE BLOCK BREAKOUT) FUSE BLOCK TRANS FUSE FUSE BLOCK, GLOW PLUG CONTROLLER FUSE BLOCK- I/P FUSE BLOCK: I/P INSTR LPS FUSE FUSE OUTPUT- ACCESSORY TYPE 3 FUSE GAGES FUSE GAGES FUSE SHUNT GAUGES FUSE GAUGES FUSE TRANS FUSE HORN DIM FUSE HORN DIMMER FUSE HORN- DM FUSE HORN/ DM FUSE TAIL LPS FUSE HORN/DM FUSE HORN/DM TAIL LPS FUSE FUSE HORN/DM TAIL LPS FUSE FUSE SHUNT HOT AT ALL TIMES FUSE BLOCK STOP FUSE HOT AT ALL TIMES HORN DM FUSE HOT AT ALL TIMES HORN/DM FUSE HOT IN RUN ENG 1 FUSE HOT IN RUN OR START FUSE BLOCK HOT IN RUN OR START GAUGES FUSE HOT IN START OR RUN ALT FUSE HOT IN START OR RUN FUSE BLOCK TRANS FUSE HTR A/C FUSE HTR FUSE HTR FUSE HTR BUS I-3 FUSE I-3 FUSE 9 I/P AUXILIARY FUSE BLOCK I/P FUSE BLOCK I/P FUSE BLOCK ENG-1 FUSE I/P FUSE BOX I/P FUSE PANEL I/P LPS FUSE INJ FUSE INST LPS FUSE INSTR LPS FUSE INSTR-LPS CRANK FUSE FUSE INSTR-LPS LPS BUS FUSE INSTRUMENT LPS FUSE LPS BUS GAGES FUSE INSTR-LPS FUSE PWR ECM-BAT CIRCUIT BREAKER FUSE PWR FUSE PWR WDO CIRCUIT BREAKER HTR A/C FUSE RADIO FUSE STOP- HAZ FUSE ECM- BAT FUSE STOP- HZ FUSE STOP/ HAZ FUSE STOP/HAZ FUSE STOP/HAZ FUSE 11 TAIL LAMPS FUSE TAIL LPS FUSE TAIL LPS FUSE FUSE TAIL LPS FUSE HORN/DM FUSE TRANS FUSE TURN-B/U FUSE TURN-B/U FUSE RADIO WIPER FUSE FUSE WIPER FUSE WIPER FUSE 14 WIPER FUSE WIPER FUSE 14

FUEL HEATER HEATER CONTROL LAMP HEATER RADIO CONTROL LAMP

"GLOW PLUGS" INDICATOR DAYTIME RUNNING LAMP INDICATOR DRL INDICATOR EGR CONTROL MALFUNCTION INDICATOR LAMP IGN ECM FUSED FASTEN BELTS INDICATOR HI BEAM INDICATOR INSTRUMENT CLUSTER SYSTEM HI BEAM INDICATOR INSTRUMENT TRANSMISSION CLUSTER RANGE INDICATOR LAMP LEFT TURN INDICATOR MALFUNCTION INDICATOR LAMP P/B BOOSTER FLUID FLOW INDICATOR/ ALARM SWITCH PARK BRAKE INDICATOR SWITCH RIGHT TURN INDICATOR SERVICE ENGINE SOON INDICATOR SERVICE THROTTLE SOON INDICATOR SERVICE TRANSMISSION INDICATOR TRANS- MISSION RANGE INDICATOR LAMP TRANS- MISSION RANGE INDICATOR LAMP HEATER CONTROL LAMP TRANSMISSION INSTRUMENT AUDIO POSITION CLUSTER ALARM INDICATOR MODULE LAMP TRANSMISSION POSITION INDICATOR LAMP TRANSMISSION RANGE INDICATOR LAMP W/BRAKE WARNING INDICATOR SYSTEM WATER IN FUEL INDICATOR

"SERVICE THROTTLE" LAMP "TRANS" LAMP (FORWARD LAMP (FORWARD LAMPS HARN, RIGHT FRONT SIDE MARKER LAMP BULB TEST DAYTIME RUNNING LAMP MODULE DAYTIME RUNNING LIGHTS IND DOME LAMP FASTEN BELTS LAMP FRONT DOME LAMP FRONT DOME LAMP RADIO GLOW PLUG WAIT LAMP HEAD- LIGHTS SYSTEM HOT IN RUN, BULB TEST OR START IGN ABS LAMP CONTROL BRAKE SW INPUT ILLUM LAMP LAMP ON INPUT LEFT BACKUP LAMP RIGHT BACKUP LAMP LEFT FRONT MARKER LAMP LEFT FRONT SIDE MARKER LAMP LEFT HEAD- LAMP LEFT HEAD- LAMP BREAKOUT) LEFT HEAD- LAMP HI HI LO LEFT HI BEAM HEAD- LAMP LEFT HIGH BEAM HEAD- LAMP LEFT LICENSE LAMP LEFT LICENSE LAMP RIGHT LICENSE LAMP LEFT PARK AND TURN LAMP LEFT PARK LAMP LEFT PARK/ TURN SIGNAL LAMP LEFT SIDE MARKER LAMP LEFT TAIL STOP AND TURN LAMP LEFT TAIL/STOP TURN LAMP LEFT TURN/ PARK LAMP ASSEMBLY LIGHTS ON INPUT SAFETY BELT INPUT PPL BULB CHECK PRNDL LAMP PROVISION FOR CENTER HIGH MOUNTED STOP LAMP PROVISION FOR DOME LAMP PROVISION FOR LEFT BACKUP LAMP PROVISION FOR RIGHT BACKUP LAMP PROVISIONS FOR LEFT FRONT SIDE MARKER LAMP PROVISIONS FOR LEFT REAR SIDE MARKER LAMP PROVISIONS FOR LEFT SIDE MARKER LAMP PROVISIONS FOR REAR DOME LAMP PROVISIONS FOR RIGHT FRONT SIDE MARKER LAMP PROVISIONS FOR RIGHT SIDE MARKER LAMP RIGHT BACKUP LAMP LEFT BACKUP LAMP RIGHT FRONT MARKER LAMP RIGHT FRONT PARK/ TURN LAMP LEFT FRONT PARK/ TURN LAMP RIGHT HEAD LAMP LO RIGHT HEAD- LAMP RIGHT HI BEAM HEAD- LAMP RIGHT HIGH BEAM HEAD- LAMP RIGHT LICENSE LAMP RIGHT LICENSE LAMP RIGHT TAIL/STOP/ TURN LAMP RIGHT PARK AND TURN LAMP RIGHT PARK LAMP RIGHT PARK/ TURN SIGNAL LAMP RIGHT TAIL/STOP TURN LAMP RIGHT TURN/ PARK LAMP ASSEMBLY SEAT BELT LAMP OUTPUT SEATBELTS AND LAMP MODULE SIDE MARKER LAMP LEFT FRONT SIDE MARKER LAMP RIGHT FRONT VSS SIG SERIAL DATA LINE SERIAL DATA SIGNAL BRAKE LAMP CONTROL EBCM GROUND W/ DAYTIME RUNNING LIGHTS W/ DRL HEADLIGHTS SYSTEM TRANSMISSIONS SYSTEM INTERIOR LIGHTS SYSTEM WAIT LAMP

BATTERY FEED FUEL PUMP SIGNAL IC REFERENCE LOW FUEL LIFT PUMP FUEL PUMP FUEL PUMP SIGNAL MAP SIGNAL FUEL SENDER, FUEL PUMP WINDSHIELD WASHER PUMP

A/C COMPRESSOR CLUTCH RELAY A/C COMPRESSOR CONTROL RELAY A/C COMPRESSOR CONTROL RELAY (7.4L VIN N A/C COMPRESSOR RELAY A/C COMPRESSOR RELAY, GENERATOR PNK WIRE A/C COMPRESSOR RELAY, GENERATOR, SEAT BELT/ HEADLAMP ALARM MODULE AUTO APPLY PARK BRAKE DATA LINK CONN- ECTOR FUEL PUMP RELAY AUTOMATIC TRANSMISSION SHIFT INTERLOCK CONTROL RELAY AUXILIARY COOLING FAN RELAY AUXILIARY COOLING FAN RELAY DAYTIME RUNNING LAMPS AUXILIARY FAN CONTROL RELAY BLOWER RELAY BODY BUILDER'S DAYTIME RUNNING LAMPS JUNCTION BLOCK RELAY BRAKE SHIFT INTERLOCK RELAY BRAKE/ TRANSMISSION SHIFT INTERLOCK RELAY BRAKE/ TRANSMISSION SHIFT INTERLOCK RELAY DAYTIME RUNNING LAMPS RELAY BREAKOUT FOR FUEL PUMP RELAY TOWARD ENGINE) DATA LINK CONN- ECTOR FUEL PUMP RELAY DAYTIME RUNNING LAMP CUTOFF RELAY DAYTIME RUNNING LAMPS AUXILIARY COOLING FAN RELAY DAYTIME RUNNING LAMPS HORN RELAY DAYTIME RUNNING LAMPS MODULE DAYTIME RUNNING LAMPS RELAY DAYTIME RUNNING LAMPS RELAY DAYTIME RUNNING LAMPS RELAY 2 DAYTIME RUNNING LAMPS RELAY DAYTIME RUNNING LAMPS MODULE DAYTIME TRANSMISSION RUNNING LAMP RELAY RANGE INDICATOR LAMP FUEL CYCLE MODULE DOOR LOCK RELAY FAN CONTROL RELAY FUEL CYCLE MODULE DAYTIME RUNNING LAMPS RELAY FUEL PUMP RELAY FUEL PUMP RELAY CTRL FUEL PUMP RELAY CTRL PCS LOW FUEL PUMP RELAY FUEL PUMP OIL PRESSURE SWITCH HAZARD FLASHER FUEL PUMP RELAY, FUEL PUMP/ OIL PRESSURE SWITCH FUEL PUMP RELAY, SWITCH GLOW PLUG CONTROL RELAY GLOW PLUG CONTROLLER AND RELAY GLOW PLUG RELAY HIGH BLOWER RELAY HORN RELAY IGNITION LAMP FEED HI BEAM FEED HI BEAM INDICATOR OUTPUT TO RELAY GROUND INTAKE MAN AIR TEMP SENS TPS NO.2 SIG GLOW PLUG RELAY FORCE MTR LOW PPL LEFT DOOR LOCK SWITCH DOOR LOCK RELAY PARK BRAKE PUMP RELAY PARK BRAKE RELAY PNK IGNITION LAMP FEED HI BM FEED HI BM INDICATOR DRL RELAY CTRL GROUND WIRE POWER DOOR LOCK RELAY STARTER MOTOR RELAY STARTER RELAY

451 451 TCM GROUND TCM GROUND SENSOR RETURN 1227 433 TRANS FLUID TEMP SIG BARO SENSOR INPUT A/T OUTPUT SPEED SENSOR APP 1 SENSOR APP 2 SENSOR APP 2 SENSOR APP 3 SENSOR APP 3 SENSOR BRAKE/ TRANSMISSION SHIFT INTERLOCK SOLENOID VEHICLE SPEED SENSOR BUFFER BREAKOUT FOR LEFT FRONT WHEEL SPEED SENSOR, TOWARD ENG) BREAKOUT FOR MAP SENSOR, TOWARD BULKHEAD) CAMSHAFT POSITION SENSOR (7.4L VIN J CKP SENSOR RETURN CKP SENSOR SIGNAL COLD ADVANCE FAST IDLE TEMPERATURE SWITCH WATER-IN-FUEL SENSOR CRANKSHAFT POSITION SENSOR DIAGNOSTIC TEST TP SENSOR SIGNAL INJECTOR 1 CONTROL ECT SENSOR IN ENGINE DATA LINK CONNECTOR TRANSMISSION CONTROL MODULE COOLANT LEVEL SENSOR ENGINE SPEED SENS IN SENSOR RETURN TP SENS SIG ENGINE SPEED SIGNAL SENSOR GROUND TP SENSOR INPUT FROM BREAKOUT FOR EGR, TOWARD MAP SENSOR) FROM ECT SENSOR BREAKOUT) FROM MAF SENSOR BREAKOUT) FROM TP SENSOR BREAKOUT) FUEL PUMP RELAY FUEL PUMP SWITCH, ENGINE OIL PRESSURE GAUGE SENSOR FUEL PUMP RELAY, FUEL PUMP SWITCH/ENGINE OIL PRESSURE GAUGE SENSOR FUEL PUMP SWITCH, ENGINE OIL PRESSURE GAUGE SENSOR HALL EFFECT SENSOR HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 HEATED OXYGEN SENSOR LEFT POST CONVERTER HEATED OXYGEN SENSOR LEFT PRE CONVERTER HEATED OXYGEN SENSOR NO.1 HEATED OXYGEN SENSOR NO.2 HEATED OXYGEN SENSOR NO.3 HEATED OXYGEN SENSOR NO.4 HEATED OXYGEN SENSOR RIGHT POST CONVERTER HEATED OXYGEN SENSOR RIGHT PRE CONVERTER IC BYPASS SENSOR GROUND SENSOR GROUND TFT SIGNAL IC BYPASS SENSOR GROUND SENSOR GROUND TFT SIGNAL 470 455 PPL IC CONTROL IC BYPASS OXYGEN SENSOR GROUND OXYGEN SENSOR SIGNAL KNOCK SENSOR INPUT ECT SIGNAL KNOCK SENSOR SIGNAL KNOCK SENSOR SYSTEM LEFT FRONT WHEEL SPEED SENSOR RIGHT FRONT WHEEL SPEED SENSOR LOW ENGINE COOLANT LEVEL INDICATOR SENSOR MAP SENSOR INPUT IAT SENS SIG ECT SENSOR INPUT THROTTLE POSITION SENS MASS AIR FLOW SENSOR (7.4L VIN J OPTICAL 3 TEMPERATURE SENSOR OXYGEN SENSOR GROUND RANGE MODE SELECTOR TRANSMISSION TEMPERATURE SENSOR RETURN SENSOR CKP RTN SENSOR SENSOR BREAKOUT) SENSOR GND SENSOR GROUND SENSOR RETURN SENSOR RTN SENSOR SIG SENSOR SIGNAL SERIAL DATA DIAGNOSTIC TEST TERMINAL VSS SIGNAL SENSOR GROUND SYSTEM GROUND SIG SENSOR SIGNAL SENSOR CKP SPEED SENSOR INPUT SYSTEM GND CLOSURE GRD APP 2 SENS GND APP 1 SENS GND APP 3 SENS GND SENSOR GND SYSTEM GROUND MAP SENSOR GROUND SYSTEM GROUND SYSTEM GROUND 452 416 SENSOR GROUND 5 VOLTS REF TFT SENSOR IN TRANS FLUID TEMP SENSOR TRANS- MISSION TEMP SENSOR TRANSMISSION INPUT SPEED SENSOR TRANSMISSION TEMPERATURE SENSOR VEHICLE SPEED SENSOR BUFFER VEHICLE SPEED SENSOR BUFFER FUEL HEATER VEHICLE SPEED SENSOR BUFFER KNOCK SENSOR SYSTEM MODULE HEATED OXYGEN SENSOR VEHICLE SPEED SENSOR BUFFER VEHICLE SPD OUTPUT VEHICLE SPEED SENSOR BUFFER, FUEL INJECTION PUMP FUEL SHUT OFF SOLENOID PNK WIRE VSS LO IN PPL SENSOR GROUND VSS SENSOR SHIELD WATER IN FUEL INDICATOR SENSOR WATER IN-FUEL SENSOR WATER- IN-FUEL INDICATOR SENSOR AUXILIARY ENGINE COOLANT FAN RELAY WATER- IN-FUEL SENSOR AUXILIARY ENGINE COOLANT FAN RELAY WATER- IN-FUEL SENSOR GLOW PLUG

4 WHEEL DRIVE LOW SWITCH (I/P HARNESS HEADLAMP SWITCH BREAKOUT, A/C COMPRESSOR HIGH PRESSURE CUTOFF SWITCH A/C COMPRESSOR PRESSURE CYCLING SWITCH AUTO APPLY PARK BRAKE SWITCH AUXILIARY COOLING FAN COOLANT PRESSURE SWITCH AUXILIARY ENGINE COOLANT FAN A/C PRESSURE SWITCH AUXILLIARY COOLING FAN COOLANT PRESSURE SWITCH BACK UP LAMPS SWITCH BACKUP LAMP SWITCH BLOWER SWITCH BLOWER SWITCH RIGHT POWER WINDOW SWITCH BRAKE PRESSURE DIFFERENTIAL SWITCH BRAKE PRESSURE WARNING SWITCH BRAKE SWITCH IN BRAKE SWITCH INPUT CRUISE CONTROL BRAKE SWITCH CRUISE CONTROL SWITCH DAYTIME RUNNING LAMPS MODULE HEADLAMP DIMMER SWITCH DOME LAMP SWITCH EVAPORATIVE EMISSIONS CANISTER PURGE VACUUM DIAGNOSTIC SWITCH FROM IGNITION SWITCH FROM PANEL DIMMER SWITCH FROM PARK BRAKE WARNING SWITCH FUEL PUMP OIL PRESSURE SWITCH FUEL PUMP OIL PRESSURE SWITCH TURN SIGNAL FLASHER BACKUP LAMP SWITCH FUEL PUMP SWITCH AND OIL PRESSURE GAUGE GLOW PLUG CONTROL SWITCH GLOWPLUG CONTROL SWITCH BREAKOUT) HEAD- LAMP DIMMER SWITCH HEAD- LIGHT SWITCH DOME SWITCH HEADLAMP DIMMER SWITCH HEADLAMPS SWITCH HEADLIGHT SWITCH HEADLIGHT SWITCH ASSEMBLY HEATER BLOWER SWITCH HORN SWITCH HOT WITH HEADLIGHT SWITCH IN PARK OR HEAD HOT WITH PARK OR HEADLAMP SWITCH ON I/P CLUSTER BRAKE PRESSURE WARNING SWITCH I/P DIMMER SWITCH I/P LAMPS DIMMER SWITCH IGNITION SWITCH INSTRUMENT PANEL DIMMER SWITCH KEY-IN WARNING BUZZER SWITCH LEFT DOOR JAMB SWITCH LEFT DOOR LOCK SWITCH UNLOCK LEFT FRONT SWITCH UP DN LEFT POWER WINDOW MASTER SWITCH LEFT POWER WINDOW MASTER SWITCH RIGHT FRONT SWITCH LEFT POWER WINDOW SWITCH LIGHT SWITCH LO HEADLAMPS DIMMER SWITCH PANEL DIMMER SWITCH ASSEMBLY DOME SWITCH PANEL DIMMER SWITCH WASHER PUMP I/P CLUSTER PANEL LAMPS SWITCH PARK BRAKE DIFFERENTIAL SWITCH PARK BRAKE LOW PRESSURE SWITCH PARK BRAKE SWITCH PARK BRAKE WARNING SWITCH PARK SWITCH PPL BRAKE SW IN BRAKE SWITCH INPUT CRUISE CTRL SW ENGAGE 20 84 PROVISIONS FOR CLEARANCE LAMPS LEFT POWER WINDOW SWITCH PULSE WIPER/ WASHER SWITCH RADIO WINDSHIELD WIPER/ WASHER SWITCH WINDSHIELD WIPER MOTOR MODULE RIGHT DOOR LOCK SWITCH RIGHT DOOR LOCK SWITCH LOCK UNLOCK RIGHT FRONT SWITCH RIGHT FRONT WINDOW SWITCH SAFETY BELT RETRACTOR SWITCH AUDIO ALARM MODULE SPEED CONTROL SWITCH STOP LAMP SWITCH STOP LAMPS, TORQUE CONVERTER BRAKE SWITCH STOP LAMPS, TORQUE CONVERTER CLUTCH SWITCH STOPLAMP SWITCH STOPLAMP SWITCH HAZARD FLASHER AUDIO ALARM MODULE STOPLAMP SWITCH IN STOPLAMP TORQUE CONVERTER CLUTCH SWITCH SWITCH PRESSURE TCC/ BRAKE SWITCH TCC/ STOPLAMP SWITCH TORQUE CONVERTER CLUTCH, STOPLAMPS SWITCH TRANS RANGE PRESSURE SWITCH ASSEMBLY TURN SIGNAL SWITCH WASH PULSE SWITCH WASH SWITCH WINDSHIELD WASHER PUMP LIGHT SWITCH WINDSHIELD WIPER AND WASHER SWITCH WINDSHIELD WIPER MOTOR WIPER SWITCH MODULE WINDSHIELD WIPER/ WASHER SWITCH WIPER SWITCH WIPER/ WASHER SWITCH

1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 3-2 SHIFT SOLENOID AUTOMATIC TRANSMISSION SHIFT INTERLOCK CONTROL SOLENOID BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID EVAP CAN PURGE VALVE EVAPORATIVE CANISTER PURGE SOLENOID EVAPORATIVE CANISTER PURGE VALVE EVAPORATIVE EMISSIONS CANISTER PURGE SOLENOID EVAPORATIVE EMISSIONS CANISTER PURGE SOLENOID (7.4L VIN J EVAPORATIVE EMISSIONS CANISTER PURGE VALVE SOLENOID (7.4L VIN J EXHAUST GAS RECIRCULATION VALVE FUEL INJECTION PUMP FUEL SHUT-OFF SOLENOID FUEL SOLENOID DRIVER (TOP FRONT LINEAR EGR SOLENOID VALVE LINEAR EGR VALVE PARK BRAKE PRESSURE VALVE SOLENOID PARK BRAKE SOLENOID PRESS CTRL SOLENOID PRESSURE CONTROL SOLENOID RANGE MODE SELECTOR PRESSURE CONTROL SOLENOID SOLENOID 1-2 SOLENOID 2-3 SOLENOID CONTACTS STARTER SOLENOID STARTER SOLENOID SOLENOID CONTACTS TCC PWM SOLENOID TCC SOLENOID TURBO CHARGER POWER VALVE SOLENOID

1 2 3 PNK PNK WIRE 1 2 PNK WIRE 2-3 SHIFT SOL PPL CLASS II DATA PNK IGNITION IN PNK IGNITION IN WIRE 3 4 5 6 PNK PNK PNK WIRE 3 121 PNK WIRE 6.5L VIN F PNK ONLY WIRE 7 8 9 10 11 PNK PNK WIRE 7 8 9 12 13 14 15 VSS RTN GROUND 450 439 PNK WIRE 8 9 PNK WIRE 12 13 PNK WIRE 17 18 PNK WIRE 94 PNK WIRE 1222 1224 1225 1226 1350 PNK WIRE 1225 1224 PNK WIRE BLK BLK WIRE BLK LT BLU/ WIRE BLK LT GRN/ WIRE BLK RED/ WIRE BLK WIRE BLK/ WHT WIRE BLK/RED WIRE BLK/WHT BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CAM POSIT SENS SIG POWER FUEL INJ NO.8 CTRL PNK WIRE CAM POSIT SENS SIGNAL PNK WIRE DK BLU WIRE DK BLU/ WHT WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/ WHT WIRE DK GRN/BLK WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE FROM SINGLE WIRE CONN ON GLOWPLUG CONTROLLER) FUSIBLE LINK 12 GA. BLUE FUSIBLE LINK 18 GA. BLUE GND IGN FEED IND CTRL PNK WIRE GRN WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE HIGH VOLTAGE COIL WIRE HIGH VOLTAGE IGNITION COIL WIRE LT BLU WIRE LT BLU/ BLK WIRE LT BLU/ WHT WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT BLU/WTH WIRE LT GRN WHT/ WIRE LT GRN WIRE LT GRN/ BLK WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE LT GRN/WTH WIRE LT GRN/YEL WIRE LT PNK PNK WIRE LT PNK WIRE NCA WIRE OR DK PNK WIRE ORG/ WIRE ORG/BLK WIRE PCS LO IGNITION PNK WIRE PNK 5 6 7 WIRE PNK 7 8 9 10 WIRE PNK 9 10 11 12 13 14 15 16 WIRE PNK 11 12 WIRE PNK 12 13 15 WIRE PNK 22 23 WIRE PNK 25 26 WIRE PNK 26 27 WIRE PNK 94 WIRE PNK IGN FEED IND LAMP OUT GROUND WIRE PNK IGN FEED SENS RTN SENS SIG WIRE PNK IGN FEED WIRE PNK IGNITION CAN PURGE SOL OUT WIRE PNK IGNITION FEED WIRE PNK INSTRUMENT CLUSTER WIRE PNK PNK 1 2 3 4 5 WIRE PNK PNK 1 2 3 4 WIRE PNK PNK 2 3 4 5 6 7 8 9 10 11 12 13 14 WIRE PNK PNK 2 3 4 5 6 7 8 9 WIRE PNK PNK 2 3 WIRE PNK PNK 26 27 WIRE PNK PNK 28 29 WIRE PNK PNK 439 439 IGNITION IGNITION WIRE PNK PNK PNK 1 2 3 WIRE PNK PNK PNK 2 3 4 5 WIRE PNK PNK PNK PNK 1 2 3 4 WIRE PNK PNK PNK WIRE PNK PNK PPL 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 WIRE PNK PNK WIRE PNK PPL PPL WIRE PNK PPL WIRE PNK RANGE SIGNAL A INPUT SPEED SIGNAL HIGH INPUT SPEED SIGNAL LOW WIRE PNK RANGE SIGNAL A RANGE SIGNAL B RANGE SIGNAL C WIRE PNK WIRE PNK/ WHT WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PNK WIRE PPL PPL PNK 3 4 5 6 7 8 WIRE PPL/ WHT WIRE PPL/WHT WIRE RED WIRE RED/ BLK WIRE RED/BLK WIRE RUN WIRE TAN WIRE TAN/ WHT WIRE TAN/BLK WIRE TAN/WHT WIRE TRANS RANGE "B" PNK TRANS RANGE "A" PPL BRAKE SWITCH IN WIRE TWISTED WIRE PAIR WHT (OR WIRE WHT DK GRN/ WIRE WHT LT BLU/ WIRE WHT LT GRN/ WIRE WHT PNK/ WIRE WHT PPL/ WIRE WHT TAN/ WIRE WHT WIRE WHT/ BLK WIRE WHT/ DK BLU WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

0.5 WATT) 1 2 ALL GASOLINE; DIESEL W/ A/T DIESEL W/ M/T 1 2 PPL 1-2 SHIFT SOL 1-2 SHIFT SOL 2-3 SHIFT SOL TCC SOL 1-2 SHIFT SOL CTRL TCC PWM SOL CTRL 1-2 SHIFT SOL. CTRL TCC SOL CTRL 1-2 SHIFT SOLENIOD 2-3 SHIFT SOL 2-3 SHIFT SOL CTRL 1-2 SHIFT SOL CTRL DIAGNOSTIC TEST 2-3 SHIFT SOL CTRL FUEL INJ CTRL 2-3 SHIFT SOLENIOD 3 2 PPL 3-2 SHIFT SOL 4 7 8 9 11 12 13 15 VSS OUT VSS RETURN GROUND 4.3L 4.3L 5.7L 4.3L AND 7.4L 5 VOLT REF 5.7L 5.7L AND 7.4L 5.7L ONLY 4.3L ONLY 5.7L VIN R 6.5L 6.5L 7.4L VIN J 6.5L VIN F 6.5L VIN F 7.4L VIN J 6.5L VIN Y 7.4L 7.4L ONLY 7.4L VIN J, 6.5L VIN F ENGINES 7.4L VIN J, 6.5L VIN F ONLY 7.4L VIN N 7.20 +/- 1.20 OHMS 15 16 PPL 29 30 VSS RTN VSS SIG 85 30 PPL 92 PPL (OR 389 419 VSS OUTPUT MIL CTRL 396 817 CRUISE STATUS VEHICLE SPEED INPUT 420 1807 PPL PPL BRAKE SIG SERIAL DATA 470 OR 452 496 1456 KNOCK SENS INPUT EGR INPUT 900 900 SERVICE CIRCUIT POWER SERVICE CIRCUIT POWER 999 998 961 452 PPL 1223 1222 SHIFT SOL B OUT SHIFT SOL A OUT HIGH IDLE SW OUT 3-2 CTRL OUT 1225 1226 419 RANGE MODE SEL B RANGE MODE SEL C SERV ENG SOON IND CTRL 1226 1225 RANGE MODE SEL C RANGE MODE SEL B RANGE MODE SEL A 1227 433 TFT SIG BARO PRESS SENS SIG 1994 VFTC 1995 VFTC 1996 VFTC 1996-97 1998/ 1999 4000 PULSES/MILE 4000 PULSES/MILE CRUISE STATUS "SERV THROTTLE SOON" IND (ALL EXCEPT DIESEL W/ M/T, (DIESEL W/ M/T, (DIESEL W/ M/T (ALL EXCEPT DIESEL W/ M/T (ENG HARN (ENG HARN, APPROX (FORWARD LAMPS HARN, (FORWARD LAMPS HARNESS, (I/P HARN, (I/P HARN, APPROX (I/P SIDE OF ENG HARN, (I/P SIDE OF ENG HARN, APPROX (REAR LAMPS HARNESS, (REAR LAMPS HARNESS, 65 OR * SCHOOL BUS GROUND RECTIFIER BRIDGE * W/ SCHOOL BUS EQUIPMENT) ** WITH SCHOOLBUS EQUIPMENT A/C CMP CLTCH RLY OUT EGR POSIT INPUT A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH AUXILLIARY COOLING FAN A/C ENABLE A/C ENABLE PCM GND PCM GND 450 150 A/C GROUND A/C INPUT BRAKE SIGNAL TCC CONTROL PPL A/C REQUEST A/C REQUEST SIG A/C REQUEST SIGNAL A/C SIG A/C SIGNAL A/T ISS HI IN A/T ISS LO IN A/T ISS SENS HI IN A/T ISS SENS LO IN A/T ONLY ABS IND. ACC BUS ACCESSORY POWER POINT AIR CONDI- TIONING SYSTEM AIR CONDITION- ING SYSTEM AIR CONDITIONING SYSTEM ALL EXCEPT 7.4L VIN N ALL GASOLINE; DIESEL W/ A/T DIESEL W/ M/T 1 2 ALT, ECM-CRANK, TURN-B/U, TRANS AND INJ FUSES APP 1 SIGNAL IN APP 2 SIGNAL IN APP 3 SENS SIG FUEL TEMP SIG IAT SIG APP 3 SIGNAL IN AUDIO ALARM AUDIO ALARM MODULE AUDIO ALARM MODULE CONVENIENCE CENTER AUTO APPLY PARK BRAKE AUTO PARK IND. AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION ONLY AUX CB AUX CIRCUIT BREAKER AUXILIARY COOLING FAN AUXILIARY COOLING FAN A/C COMPRESSOR CLUTCH B+ BREAKOUT) B/H CONN BACKUP LAMPS CIRCUIT BAT VOLT SENSE INPUT BATT BUS BODY BUILDER'S JUNCTION BLOCK BRAIDED STRAP BRAKE APPLIED INPUT BRAKE IND BRAKE SW OUTPUT BRAKE WARNING ALARM BUZZER BREAKOUT FOR EGR, TOWARD RELAYS) BREAKOUT FOR HEADLAMP SW) BREAKOUT FOR STEERING COLUMN) PPL BREAKOUT) BRK SW INPUT BULKHEAD GROMMET) BUS BAR BUS BAR GROUND BUSS BAR BYPASS 5 VOLTS SENS GROUND SENS GROUND TRANS TEMP INPUT CAM POSIT SENS RTN CANADA ONLY CANADIAN MODELS CANADIAN MODELS ONLY CAVITY A) CIGARETTE LIGHTER CLASS II DATA CLOSED IN PARK CLOSED IN PARK, NEUTRAL CLUTCH SIG CONTROL AREA CONVENIENCE CENTER CONVERTER (4.3L VIN W COOLANT TEMP GAUGE COOLANT TEMPERATURE GAUGE COOLING FAN NOTOR HARN BREAKOUT) CRANK SIGNAL ECT SIGNAL MAP SIGNAL CRUISE CONTROL ACTIVATOR CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEMS CRUISE CTRL ENGAGED CRUISE CTRL SIG-ENGAGED CRUISE ON INPUT CRUISE ON INPUT SET/COAST INPUT RESUME/ACCEL INPUT CRUISE ON/OFF SIG CRUISE SIGNAL CYLINDER HEAD) DIESEL CYLINDER NO.1 CYLINDER NO.2 CYLINDER NO.1 CYLINDER NO.4 CYLINDER NO.5 CYLINDER NO.3 CYLINDER NO.5 CYLINDER NO.3 CYLINDER NO.4 CYLINDER NO.6 CYLINDER NO.7 CYLINDER NO.2 CYLINDER NO.8 DASH LAMPS INPUT DATA CLASS II DATA CLSS 2 DATA LINK CONN- ECTOR DAYTIME RUNNING LAMPS DAYTIME RUNNING LAMPS IND DAYTIME RUNNING LAMPS MODULE DEF BLEND DELAY RHEO- STAT DELAY/ SPEED/ WASH CONTROL DIAG ENABLE DIAG ENABLE-POWERTRAIN TP SENS IN DIAG SIG DIAGNOSIS TEST TP SIGNAL INJECTOR 1 CTRL DIAGNOSTIC TEST DIESEL DK DIESEL GASOLINE DIESEL ONLY DIM HIGH DIST. REF HI DIST. REF LO ECT SENS INPUT ECT SIGNAL ECT TEMP SENS IN EGR CONTROL EGR CONTROL GOVERNOR CONTROL EGR SOL OUT ELEC SPK TIMING CTRL SIGNAL ELECTRONIC 4-SPD AUTOMATIC OVERDRIVE TRANSMISSION ELECTRONIC 4-SPEED AUTOMATIC OVERDRIVE TRANSMISSION ENG SHUT-OFF CTRL EST CTRL EVAP CAN PURGE CTRL EVAP CAN PURGE VAC IN FORCE MTR RTN GROUND GROUND SENS GROUND EXCEPT 7.4 L VIN J 7.4 L VIN J EXCEPT DRL FASTEN BELTS FASTEN BELTS OUT FEED IGN FEED IGNITION FOR LEFT HEADLAMP) FOR RIGHT HEADLAMPS) FORCE MTR FEED SENS RTN SENS RTN ELEC SPK TIMING CTRL SIG FROM BREAKOUT FOR ABS HARN) FROM FUSIBLE LINK FROM FUSIBLE LINK A FROM LEFT BULK- HEAD GROMMET TOWARD PCM) FROM LEFT BULKHEAD GROMMET) FROM PCM CONNS FROM TPS BREAKOUT) FUEL CYCLE MODULE FUEL GAUGE FUEL INJ CTRL FUEL INJ NO.1 CTRL 2-3 SHIFT SOL CTRL FUEL INJ. NO.1 FUEL INJ. NO.2 FUEL INJ. NO.3 FUEL INJ. NO.5 FUEL INJ. NO.4 FUEL INJ. NO.6 FUEL INJ. NO.7 FUEL INJ. NO.8 FUEL INJECTOR NO.1 FUEL INJECTOR NO.2 FUEL INJECTOR NO.2 FUEL INJECTOR NO.1 FUEL INJECTOR NO.3 FUEL INJECTOR NO.4 FUEL INJECTOR NO.4 FUEL INJECTOR NO.5 FUEL INJECTOR NO.5 FUEL INJECTOR NO.6 FUEL INJECTOR NO.7 FUEL INJECTOR NO.8 FUEL PMP RLY CTRL 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 FUEL SENDER FUEL SOLE- NOID FUEL TEMP FULL DIM FUSIBLE LINK FUSIBLE LINK 18 GA. RUST FUSIBLE LINK (10 GA- FUSIBLE LINK (12 GA- FUSIBLE LINK (14 GA- FUSIBLE LINK (16 GA- FUSIBLE LINK (20 GA- FUSIBLE LINK A FUSIBLE LINK C FUSIBLE LINK D FUSIBLE LINK E FUSIBLE LINK FUSIBLE LINK FUSIBLE LINK FUSIBLE LINK FUSIBLE LINK FUSIBLE LINKS GAS DIESEL GAS MODELS ONLY GASOLINE DIESEL GASOLINE ENGINES GASOLINE W/ A/T ONLY GLOW PLUG CONTROLLER GLOW PLUG SIG GLOW PLUG STUD GLOW PLUGS GLOWPLUG CONTROLLER BREAKOUT) GROMMET TOWARD IGNITION SW) GROUND DISTRIBUTION SYSTEM GROUND KNOCK SENS SIGNAL HAZARD FLASHER HAZARD LAMPS FLASHER HAZARD WARNING LAMPS FLASHER HEAD OFF HEAD OFF PARK HEAD PARK HEADLAMP BREAKOUT) HEADLIGHTS SYSTEM HEAT VENT B/L HEATED OXYGEN HEAVY DUTY ELECTRONIC 4-SPD AUTOMATIC OVERDRIVE TRANSMISSION HI LO HI RESOLUTION SIG HI-BEAM IND HIGH DIM HIGH LOW HIGH OFF LOW OFF WASH PULSE HIGH OFF OFF LOW HOLD-IN WINDING HOLD-IN WINDING PULL-IN WINDING HOT AT ALL TIMES HOT AT ALL TIMES FUSIBLE LINK HOT IN HOT IN ACC OR RUN HOT IN ACCY AND RUN HOT IN ACCY OR RUN HOT IN CRANK HOT IN ON, RUN HOT IN PARK OR HEAD HOT IN RUN HOT IN RUN AND START HOT IN RUN OR START HOT IN RUN PWR WDO CIRCUIT BREAKER HOT IN RUN, START HOT IN START HOT IN START OR RUN HTR BUS I/P CLUSTER IAC B LOW IAC B HIGH IAC A HIGH IAC A LOW IC BYPASS TP/ECT GROUND MAP GROUND IC REFERENCE HIGH IC SIGNAL VSS SIGNAL VSS TP REFERENCE IGN BUS IGN FEED IGN FEED IND CTRL GND IGN FEED PRESS SW SIG PRESS SW SIG IGN FEED RANGE SIG "B" RANGE SIG "A" IGN ON INPUT IGNITION FEED IGNITION IN IGNITION MODULE ILLUM. LAMPS ILLUMINATION LAMPS INJECTOR 1 INJECTOR 2 INJECTOR 2 CONTROL INJECTOR 1 CONTROL INJECTOR 1 CONTROL INJECTOR NO.1 INJECTOR NO.1 CTRL 2-3 SHIFT SOL CTRL INJECTOR NO.1 INJECTOR NO.2 INJECTOR NO.2 INJECTOR NO.3 INJECTOR NO.4 INJECTOR NO.5 INJECTOR NO.6 INJECTOR NO.7 INJECTOR NO.8 INJECTOR NO.8 CTRL INSTRUMENT CLUSTER INSTRUMENT CLUSTER PRINTED CIRCUIT INSTRUMENT CLUSTER RIGHT TURN IND. INSTRUMENT CLUSTER RIGHT TURN INDIC INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTERS SYSTEM INTERIOR LAMPS SYSTEM KNOCK SENS SIG KNOCK SIGNAL A/C SIGNAL KNOCK SIGNAL EGR PINTLE POSITION SIGNAL LEFT BANK GLOW BANKS LEFT BANK GLOW PLUGS LEFT BULK- HEAD GROMMET UNDER I/P) LEFT BULKHEAD GROMMET TOWARD PCM) LEFT BULKHEAD GROMMET) LEFT GLOWPLUG BREAKOUTS) LEFT HEADLAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP ASSEMBLY HI LEFT HEADLAMP ASSEMBLY LO HI LEFT HEADLAMP BREAKOUT) LEFT HEADLAMP HI HI LO LEFT HEADLAMP HI LO LEFT HIGH BEAM HEADLAMP LEFT HIGH BEAM HEADLAMP ASSEMBLY LEFT HIGH/ LOW HEADLAMP LEFT HIGH/LOW BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LEFT LOW BEAM HEADLAMP ASSEMBLY LEFT POST CONVERTER (5.7L VIN R LEFT PRE- CONVERTER LEFT PRE- CONVERTOR LEFT REAR SIDE LEFT TURN IND LEFT TURN INDIC LICENSE LAMPS, LEFT REAR LICENSE LAMPS, RIGHT REAR LINK A LINK B LINK B FUSIBLE LINK C LINK D LINK F LO HI LO HI HI LO LO LO HI LO MED LOW COOLANT IND LOW FLOW LOW HIGH LOW PRES. LT INSTRUMENT CLUSTER LT LT LT LT PPL M/T A/T M/T ONLY MAIN HARN IN BREAKOUT FOR LEFT BANK GLOWPLUGS) MAL- FUNCTION IND MANUAL TRANSMISSION MAP REF LO MAP SENS INPUT FORCE MTR HI MAP SIGNAL INTAKE AIR TEMP SENS ECT SENS SIGNAL MIL CONTROL MIST OFF MULTIFUNCTION LEVER NEAR BREAKOUT FOR CHASSIS HARNESS) NOT USED NOT USED NOT USED OF TAILLAMPS EXTENSION TO REAR LAMPS HARNESS BREAKOUT) OFF HEAD OFF HEAD HEAD PARK OFF HEAD PARK OFF HI OFF MAX NORM OIL PRESS GAUGE OIL PRESS GAUGE FUEL GAUGE OIL PRESS INPUT MAP SENS INPUT OIL PRESSURE GAUGE ON OFF ON/OFF INPUT OR 950 470 OR TRANSMISSION TEMP INPUT P/B BOOSTER FLUID FLOW ALARM P/B BOOSTER FLUID FLOW, PRESSURE ALARM PANEL ILLUMINATION PANEL LAMPS PANEL) PARK BRAKE IN PARK BRAKE IN FOG LAMPS PARK BRAKE IND PARK HEAD OFF PARK TURN PCM GROUND PCS HI PCS LO IGNITION PCS LOW PCS SOL HI OUT PCS SOL LO OUT POST CONVERTER (4.3L VIN W POWER DISTRIBUTION POWER DISTRIBUTION SYSTEM PPL 2 3 4 PPL 3 4 PPL 15 16 PPL 16 17 18 19 PPL 20 21 PPL 23 24 PPL 24 25 PPL 92 PPL 420 474 BRAKE SW INPUT PPL A/T M/T PPL APP 2 SIGNAL IN PPL BRAKE PEDAL SW IN TCC PWM SOL CTRL PPL BRAKE SIGNAL TCC PWM CONTROL PPL CKP POSIT SENS RTN VSS RTN VSS SIGNAL SIGNAL PPL CKP SENS RTN VSS RTN VSS SIG PPL DIESEL PPL DISENGAGE INPUT PPL DISENGAGE INPUT GROUND IGNITION BRAKE APPLIED INPUT PPL FROM LEFT BULKHEAD GROMMET) PPL M/T PPL PPL PPL PPL 28 29 30 31 32 PPL PPL 420 1807 BRAKE SIG SERIAL DATA PPL PPL 420 1807 BRAKE SW INPUT SERIAL DATA PPL SERIAL DATA PPL SERIAL DATA SIG PPL STOPLMP SW IN PPL STUD PPL TCC/STOPLAMP INPUT PRESS CTRL SOL. HI PRESS SW SIG PRESSURE CONTROL SOL PRESSURE DIFF SW BREAKOUT) PROVISION FOR BODY BUILDER PROVISION FOR MARKER LAMPS PROVISION FOR ROOF MARKER LAMPS PROVISION FOR TACHOMETER PROVISIONS FOR BODY BUILDER ADDED LAMPS PROVISIONS FOR CLEARANCE LAMPS PROVISIONS FOR FOG LAMPS PROVISIONS FOR LEFT TAIL/STOP, TURN SIGNAL LAMPS PROVISIONS FOR MARKER LAMPS PROVISIONS FOR PARK LAMPS PROVISIONS FOR REAR MARKER LAMPS PROVISIONS FOR RIGHT TAIL/STOP, TURN SIGNAL LAMPS PROVISIONS FOR TACHOMETER PROVISIONS FOR WIPER/WASHER MODULE PROVISIONS PROVISIONS FOR RIGHT SIDE MARKER FOR LEFT SIDE MARKER PULL-IN WINDING PWR ACC CIRCUIT BREAKER PWR BUS PWR CIRCUIT BREAKER R/A INPUT RANGE MODE SELECTOR RANGE SIG "C" RANGE SIGNAL "A" RANGE SIGNAL "B" RANGE SIGNAL "C" RANGE SIGNAL A INPUT SPEED SIGNAL HIGH INPUT SPEED SIGNAL LOW RANGE SIGNAL B RANGE SIGNAL C MIL CONTROL RECTIFIER BRIDGE REF 5 VOLT REF LO REF LO TEMP RESUME/ACCEL INPUT RESUME/ACCEL SIG RETURN CONTROL TIMING RIGHT BANK GLOW BANKS RIGHT BANK GLOW PLUGS RIGHT HEADLAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP ASSEMBLY HI RIGHT HEADLAMP ASSEMBLY LO HI RIGHT HEADLAMP LO RIGHT HIGH BEAM HEADLAMP RIGHT HIGH BEAM HEADLAMP ASSEMBLY RIGHT HIGH/ LOW HEADLAMP RIGHT HIGH/LOW BEAM HEADLAMP RIGHT LAMPS BREAKOUT) RIGHT LOW BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP ASSEMBLY RIGHT POST CONVERTER (5.7L VIN R RIGHT PRE- CONVERTER RIGHT PRE- CONVERTOR RIGHT TAIL- LAMPS BREAKOUT) RIGHT TURN IND RIGHT TURN IND. HI BEAM IND. RIGHT TURN IND. SAFETY BELT IND. S/C DK S/C INPUT SAFETY BELT IND SAFETY BELT INPUT SEAT BELT ALARM SEAT BELT ALARM INSTRUMENT CLUSTER SEAT BELT/ LAMPS ALARM SEAT BELTS/ LAMPS ALARM MODULE SEATBELT TELL TALE SEATBELTS/ LAMPS ALARM MODULE SELECTOR CONTROL SENS GND SERIAL DATA SERVICE BRAKE IND SERVICE TRANS OUT SERIAL DATA SERVICE TRANS OUTPUT SERIAL DATA SERVICE TRANSMISSION IND. SET- SET/COAST INPUT SET/COAST SIG SHIFT INTERLOCK SYSTEM SHIFT SOL. SHIFT SOL. SIGNAL CONTROL TIMING SINGLE DUAL SOLID STATE SPARK PLUGS SPEED METER SPEED- OMETER SPEEDO- METER STARTING/ CHARGING SYSTEM STEERING COLUMN GROUND STEERING COLUMN) STEERING WHEEL) SW SENSE SYSTEM GROUND TACHOMETER TEST LEAD TAIL STOP TAILLAMPS BREAKOUT) TCC BRAKE SW TCC PWM SOL TCC PWM SOL 1-2 SHIFT SOL TCC PWM SOL 2-3 SHIFT SOL TCC SOL 1-2 SHIFT SOL TCC SOL 2-3 SHIFT SOL TCC SOL 2-3 SHIFT SOL 1-2 SHIFT SOL THIS CAN PLUG INTO THROTTLE POSIT SENS TIMING CONTROL RETURN TIMING CONTROL SIGNAL) TO ECM I, GAGES, TRANS FUSES AND TO GLOW PLUG CONTROLLER TORQUE CONVERTER CLUTCH TP SENS INPUT TRANS FLUID TEMP SIG MAP SENS TRANS INPUT SPD LO CKP SIG OPTICAL SENS GND OPTICAL SENS CAM SIG TRANS OUTPUT TRANS RANGE "A" TRANS RANGE "B" TRANS RANGE "C" TRANS TEMP TRANS TEMP SIG IN TRANS- MISSION TEMP TRANS.) TRANSMISSION SPEED INPUT TURN LEFT TURN ON INPUT TURN RIGHT TURN SIGNAL FLASHER TWISTED PAIR VEHICLE SPD OUTPUT VEHICLE SPEED INPUT VEHICLE SPEED INPUT INPUT SPEED SENS LO INPUT SPEED SENS HI VEHICLE SPEED INPUT TRANS INPUT SPD LO TRANS INPUT SPD HI VEHICLE SPEED SIG VIN J VIN F VIN N ONLY VIN N W/ AUTOMATIC TRANSMISSION VOLT- METER VSS HI VSS HI IN VSS INPUT VSS INPUTS VSS LO VSS LO IN VSS LO VSS SIG VSS HI SECOND. VSS VSS OUT VSS OUT-ABS VSS OUTPUT VSS RETURN VSS RTN GND IGN VSS RTN GROUND IGN FEED VSS SIG VSS VSS OUT VSS SHIELD VSS SIG VSS HI VSS LO SECOND VSS SIG VSS SIG VSS OUT VSS SIGNAL W/6.5L VIN Y W/ A/C W/ A/C W/O A/C W/ A/T ONLY W/ AUTO TRANS W/ AUTO TRANSMISSION W/ AUTOMATIC TRANSMISSION W/ AUTOMATIC TRANSMISSIONS W/ DIESEL ENGINES W/ DRL W/ DRL LT W/ DRL PPL PPL W/ GASOLINE ENGINES W/ MANUAL TRANSMISSION ONLY PPL W/ SCHOOLBUS EQUIPMENT W/ W/O W/DELUXE SCHOOL BUS W/O A/C W/O DRL WAIT TO WARNING SYSTEMS WASH PULSE WASTEGATE SOL CTRL WATER IN FUEL WATER IN-FUEL INPUT WHL SPD SIG, LEFT FRT CAM POSIT SENS SIG POWER FUEL INJ NO.6 CTRL WITH AUTOMATIC TRANSMISSION ONLY WITH MANUAL TRANSMISSION ONLY