GMC Vandura P3500 (1985-1997) hot at all times Wiring diagrams

BACKUP LAMPS CIRCUIT BLK WIRE BRN WIRE DK BLU WIRE DK GRN WIRE FUSE BLOCK BREAKOUT) GRN WIRE HAZARD HAZARD LAMPS FLASHER (LEFT INNER BULKHEAD ON RELAY BRACKET) HEAD OFF HEADLAMPS SWITCH HORN CONN BREAKOUT) HOT AT ALL TIMES HOT IN I/P FUSE BLOCK INSTRUMENT CLUSTER RIGHT TURN IND. INTERIOR LAMPS SYSTEM LEFT FRONT PARK, TURN SIGNAL (T/S) LAMP LEFT FRONT SIDE MARKER LAMP LEFT TURN IND LT BLU WIRE NORMAL ORG/ WIRE PARK PPL PROVISION FOR CENTER HIGH MOUNTED STOP LAMP PROVISIONS FOR LEFT REAR SIDE MARKER LAMP PROVISIONS FOR LEFT TAIL/STOP, TURN SIGNAL LAMPS PROVISIONS FOR MARKER LAMPS PROVISIONS FOR RIGHT TAIL/STOP, TURN SIGNAL LAMPS RIGHT FRONT PARK, TURN SIGNAL (T/S) LAMP RIGHT LAMPS BREAKOUT) RIGHT TAIL- LAMPS BREAKOUT) RUN WIRE STOP STOP/ HAZ FUSE TAIL TAIL LAMPS FUSE TAIL STOP TAILLAMPS BREAKOUT) TURN TURN LEFT TURN RIGHT TURN SIGNAL FLASHER TURN SIGNAL SWITCH TURN-B/U FUSE WHT WIRE YEL WIRE

BACKUP LAMPS CIRCUIT BLK WIRE BLU WIRE BRN WIRE COOLING FAN NOTOR HARN BREAKOUT) CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE GRN WIRE HAZARD HAZARD LAMPS FLASHER (INNER LEFT SIDE OF MAIN SUPPORT BRACKET) HEAD OFF HEADLAMP BREAKOUT) HEADLAMP SWITCH CONNECTOR) HEADLAMPS SWITCH HOT AT ALL TIMES HOT IN I/P FUSE BLOCK INSTRUMENT CLUSTER RIGHT TURN INDIC INTERIOR LAMPS SYSTEM LEFT FRONT PARK, TURN SIGNAL (T/S) LAMP LEFT HEAD- LAMP BREAKOUT) LEFT HEADLAMP BREAKOUT) LEFT TURN INDIC LT BLU WIRE NORMAL ORG/ WIRE PARK PARK TURN PPL PROVISION FOR CENTER HIGH MOUNTED STOP LAMP PROVISIONS FOR LEFT FRONT SIDE MARKER LAMP PROVISIONS FOR LEFT REAR SIDE MARKER LAMP PROVISIONS FOR LEFT TAIL, STOP, TURN SIGNAL (T/S) LAMPS PROVISIONS FOR MARKER LAMPS PROVISIONS FOR RIGHT FRONT SIDE MARKER LAMP PROVISIONS FOR RIGHT TAIL, STOP, TURN SIGNAL (T/S) LAMPS RIGHT FRONT PARK, TURN SIGNAL (T/S) LAMP RUN WIRE STOP/ HAZ FUSE TAIL LAMPS FUSE TORQUE CONVERTER CLUTCH, STOP LAMPS SWITCH (BRAKE PEDAL SUPPORT BRACKET) TURN TURN LEFT TURN RIGHT TURN SIGNAL FLASHER TURN SIGNAL SWITCH TURN-B/U FUSE WHT WIRE WINDSHIELD WIPER MOTOR BREAKOUT) YEL WIRE

1996 VFTC ACCY BLK WIRE BLK/WHT WIRE BULB TEST DAYTIME RUNNING LAMPS (DRL) MODULE (ATTACHED TO I/P HARNESS AT STEERING COLUMN) DAYTIME RUNNING LAMPS (DRL) RELAY (ON MAIN SUPPORT BRACKET AT DRIVER'S ISLAND) DAYTIME RUNNING LAMPS (DRL) RELAY 2 DIODE NETWORK DK BLU WIRE DK GRN/WHT WIRE DRL INDICATOR GAUGES FUSE GRN WIRE HEAD- LAMP DIMMER SWITCH HEADLAMPS SWITCH HI BEAM INDICATOR HI LO HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK IGNITION SWITCH INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT HEAD- LAMP LEFT HI BEAM HEAD- LAMP LO HI LOCK OFF LT GRN WIRE LT GRN/BLK WIRE NEAR BREAKOUT FOR CHASSIS HARNESS) ORG/ WIRE PARK BRAKE IN FOG LAMPS PARK BRAKE INDICATOR SWITCH (ON PARK BRAKE) PARK HEAD OFF PNK IGNITION LAMP FEED HI BM FEED HI BM INDICATOR DRL RELAY CTRL GROUND WIRE PNK WIRE RIGHT HEAD- LAMP RIGHT HI BEAM HEAD- LAMP RUN WIRE TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE

1996 VFTC ACCY BLK WIRE BLK/WHT WIRE BULB TEST DAYTIME RUNNING LAMPS (DRL) MODULE (ATTACHED TO I/P HARNESS AT STEERING COLUMN) DAYTIME RUNNING LAMPS (DRL) RELAY (ON MAIN SUPPORT BRACKET AT DRIVER'S ISLAND) DIODE NETWORK DK BLU WIRE DK GRN/WHT WIRE DRL INDICATOR GAUGES FUSE GRN WIRE HEAD- LAMP DIMMER SWITCH HEADLAMPS SWITCH HI LO HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK IGNITION SWITCH INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM HI BEAM INDICATOR LEFT HEAD- LAMP LO HI LOCK OFF LT GRN WIRE LT GRN/BLK WIRE NEAR BREAKOUT FOR CHASSIS HARNESS) ORG/ WIRE PARK BRAKE IN FOG LAMPS PARK BRAKE INDICATOR SWITCH (ON PARK BRAKE) PARK HEAD OFF PNK IGNITION LAMP FEED HI BM FEED HI BM INDICATOR DRL RELAY CTRL GROUND WIRE PNK WIRE RIGHT HEAD- LAMP RUN WIRE TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE

AUTO APPLY BRAKE FUSE AUTO APPLY PARK BRAKE SWITCH BATTERY JUNCTION BLOCK BLK WIRE DIESEL DIODE DK GRN WIRE ENGINE COOLANT TEMPERATURE GAUGE SENDER (FRONT OF ENGINE) FUEL LEVEL SENDER (TOP OF FUEL TANK) FUEL SENDER, FUEL PUMP (TOP OF FUEL TANK) GASOLINE HOT AT ALL TIMES HOT IN I/P AUXILIARY FUSE BLOCK LT BLU WIRE LT GRN WIRE ORG/ WIRE PARK PARK BRAKE LOW PRESSURE SWITCH (ON RIGHT FRAME RAIL BEHIND TRANSMISSION) PARK BRAKE PRESSURE VALVE SOLENOID PARK BRAKE PUMP MOTOR (ON RIGHT FRAME RAIL BEHIND TRANSMISSION) PARK BRAKE PUMP MOTOR RELAY (ON RIGHT FRAME RAIL BEHIND TRANSMISSION) PNK WIRE PNK/BLK WIRE PPL RED WIRE RUN WIRE YEL WIRE

BATTERY JUNCTION BLOCK (LEFT SIDE OF ENGINE BULKHEAD, ABOVE RELAY BRACKET) BLK WIRE BULKHEAD GROMMET) CRK (START) DK BLU WIRE FROM GENERATOR B+ BREAKOUT) FUEL INJECTION PUMP COLD ADVANCE SOLENOID (IN FUEL INJECTION PUMP) FUSIBLE LINK (16 GA- GAUGES FUSE GLOW PLUGS HOT AT ALL TIMES HOT IN (ON) RUN, START (CRANK) I/P FUSE BLOCK (DASH PANEL PROVIDED BY BODY BUILDER) (BODY BUILDER INSTALLED) IGNITION SWITCH INSTRUMENT CLUSTER LOCK ON (RUN) OFF LT GRN/BLK WIRE NCA WIRE PNK IGN FEED IND LAMP OUT GROUND WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL STUD RED WIRE STARTER RELAY (ENGINE BULKHEAD RELAY BRACKET UNDER BATTERY JUNCTION BLOCK) STARTER SOLENOID (STARTER AT LOWER RIGHT SIDE OF ENGINE) STUD WATER IN FUEL WHT WIRE YEL WIRE YEL/BLK WIRE

A/C HIGH PRESSURE CUT-OFF SWITCH (ON REAR OF THE A/C COMPRESSOR) BLK WIRE BLK/WHT WIRE BREAKOUT FOR CRUISE CONTROL MODULE, TOWARD RELAYS) BREAKOUT FOR CRUISE CONTROL MODULE, TOWARD VCM) BREAKOUT FOR GENERATOR, TOWARD CRUISE CONTROL MODULE) BREAKOUT FOR LEFT FRONT WHEEL SPEED SENSOR, TOWARD ENG) BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG-BAT FUSE FUEL GAUGE FUEL PUMP, SENDER (ON TOP OF FUEL TANK) FUEL PUMP/ OIL PRESSURE SWITCH (ON ENGINE BLOCK, TOP REAR, BEHIND DISTRIBUTOR) GAUGES FUSE GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START (CRANK) I/P FUSE BLOCK (MOUNTED ON THE I/P) INSTRUMENT CLUSTER LT BLU/WHT WIRE LT GRN WIRE MASS AIR FLOW SENSOR (MOUNTED IN FRESH AIR INTAKE BEHIND AIR FILTER BOX) NCA WIRE OIL PRESS GAUGE ORG/ WIRE PNK PNK 1 2 3 4 WIRE PNK PNK 2 3 WIRE PNK WIRE PPL RED WIRE RED/BLK WIRE SERVICE ENGINE SOON INDICATOR SPEED METER TAN WIRE THROTTLE POSITION SENSOR (ON RIGHT SIDE OF INTAKE PLENUM AT THROTTLE INTAKE) TRANS FUSE WHT WIRE YEL WIRE

1225 1224 PNK WIRE 900 900 SERVICE CIRCUIT POWER SERVICE CIRCUIT POWER A/C REQUEST SIGNAL ANTI-LOCK BRAKES SYSTEM PPL B(+) BLK RED/ WIRE BLK WIRE BLK/WHT BLK WIRE BLK/WHT WIRE BREAKOUT FOR MAP SENSOR, TOWARD BULKHEAD) BRN WIRE BRN/WHT WIRE CRUISE CTRL ENGAGED CRUISE CTRL SIG-ENGAGED CYLINDER NO.1 CYLINDER NO.4 CYLINDER NO.5 CYLINDER NO.3 CYLINDER NO.6 CYLINDER NO.7 CYLINDER NO.2 CYLINDER NO.8 DISTRIBUTOR DK BLU WIRE DK BLU/ WHT WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BAT FUSE ELEC SPK TIMING CTRL SIGNAL EST CTRL EVAP CAN PURGE VAC IN FORCE MTR RTN GROUND GROUND SENS GROUND FORCE MTR FEED SENS RTN SENS RTN ELEC SPK TIMING CTRL SIG FROM BREAKOUT FOR ABS HARN) 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 PUMP PRIME CONNECTOR FUEL PUMP RELAY (AT RELAY CENTER RIGHT SIDE OF MAIN SUPPORT AT DRIVER'S ISLAND) GROUND GRY WIRE HIGH VOLTAGE COIL WIRE HOT AT ALL TIMES HOT IN RUN I-3 FUSE I/P FUSE BLOCK (MOUNTED ON THE I/P) IGN FEED IGN FEED PRESS SW SIG PRESS SW SIG IGNITION COIL (ON BRACKET AT REAR OF INTAKE PLENUM) IGNITION COIL DRIVER (ON BRACKET AT REAR OF INTAKE PLENUM) INPUT SPEED SENSOR (HD TRANSMISSION ONLY) LT BLU/BLK WIRE LT BLU/WHT WIRE OR 950 470 ORG/ WIRE PNK IGN FEED WIRE PNK PNK 1 2 3 4 WIRE PNK WIRE PPL PPL PPL 420 1807 BRAKE SW INPUT SERIAL DATA PPL TCC/STOPLAMP INPUT PRESS SW SIG PROVISION FOR TACHOMETER RED WIRE RED/BLK WIRE SPARK PLUGS SPEED SENSOR INPUT VEHICLE CONTROL MODULE (VCM) (MOUNTED TO TOP OF RADIATOR SUPPORT) VSS SIGNAL VSS OUTPUT CHECK ENGINE LP CTRL 389 419 WHT WIRE WHT/BLK WIRE

4 7 8 9 11 12 13 15 VSS OUT VSS RETURN GROUND BLK WIRE BLK/RED WIRE BREAKOUT FOR ENGINE COOLANT FAN MOTOR, TOWARD CRUISE CONTROL MODULE) BRN WIRE BRN/WHT WIRE CONTACT CRUISE CONTROL MODULE (ON RADIATOR SUPPORT BRACKET) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BAT FUSE ENG 1 FUSE ENGINE COOLANT TEMPERATURE SENSOR (FRONT, CENTER OF ENGINE COOLANT INTAKE) FROM BREAKOUT FOR CRUISE CONTROL MODULE, TOWARD ENG) FROM BREAKOUT FOR GENERATOR) GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, START (CRANK) I-3 FUSE I/P FUSE BLOCK (MOUNTED ON THE I/P) IDLE SPEED CONTROL ACTUATOR (ON THROTTLE BODY) LEFT BULK- HEAD GROMMET UNDER I/P) LINEAR EGR SOLENOID VALVE (NO COMPONENT LOCATION AVAILABLE) LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PNK 9 10 11 12 13 14 15 16 WIRE PNK PNK 1 2 3 4 5 WIRE PNK PNK 26 27 WIRE PNK WIRE PPL PPL 16 17 18 19 PPL TCC/STOPLAMP INPUT PPL/WHT WIRE RED WIRE TAN WIRE TAN/BLK WIRE THROTTLE POSITION SENSOR (ON LEFT SIDE OF THROTTLE BODY) VEHICLE SPEED SENSOR (ON LEFT REAR SIDE OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (ON DRIVER'S ISLAND SUPPORT ABOVE ACCELERATOR PEDAL) VSS VSS LO VSS SIG VSS HI SECOND. VSS WHT WIRE YEL WIRE

BATTERY JUNCTION BLOCK (ON FORWARD LEFT SIDE OF BULKHEAD) BLK WIRE BLK/RED WIRE BRN WIRE BRN/WHT WIRE BYPASS DIST. REF HI DIST. REF LO DISTRIBUTOR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM 1 FUSE FUEL GAUGE FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY (AT RELAY CENTER RIGHT SIDE OF MAIN SUPPORT AT DRIVER'S ISLAND) FUEL PUMP, SENDER (ON TOP OF FUEL TANK) FUSIBLE LINK (16 GA- GAUGES FUSE GRY WIRE HIGH VOLTAGE IGNITION COIL WIRE HOT AT ALL TIMES HOT IN RUN, START (CRANK) I/P FUSE BLOCK (MOUNTED ON THE I/P) IGNITION COIL (ON BRACKET AT REAR OF INTAKE PLENUM) IGNITION MODULE IGNITION SWITCH INSTRUMENT CLUSTER LOCK OFF OIL PRESS GAUGE ORG/ WIRE PICKUP COIL PNK 9 10 11 12 13 14 15 16 WIRE PNK PNK 1 2 3 4 5 WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RUN WIRE SERVICE ENGINE SOON INDICATOR SPEED METER TACHOMETER TEST LEAD TAN WIRE TAN/BLK WIRE THROTTLE BODY FUEL INJECTOR NO.1 (ON TOP OF INTAKE MANIFOLD) THROTTLE BODY FUEL INJECTOR NO.2 (ON TOP OF INTAKE MANIFOLD) WHT WIRE