GMC Forward Control P3500 (1985-1999) hot in run, start Wiring diagrams

AUXILIARY ENGINE COOLING FAN (MOUNTED ON FRONT OF RADIATOR) BLK WIRE BLU WIRE DK BLU WIRE ENG 1 FUSE 15 FAN CONTROL RELAY (ON TOP OF STEERING COLUMN SUPPORT, BEHIND STEERING COLUMN) FUSIBLE LINK (18 GA- HOT AT ALL TIMES HOT IN RUN, START I/P FUSE BLOCK (BODY BUILDER INSTALLED) (BEHIND DASH PANEL) PNK WIRE RED WIRE

A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH A/C COMPRESSOR HIGH PRESSURE CUT-OFF SWITCH (ON REAR OF A/C COMPRESSOR) A/C COMPRESSOR RELAY CTRL A/C REQUEST SIGNAL BLK WIRE DK GRN WIRE DK GRN/WHT (OR NCA) WIRE DK GRN/WHT WIRE ENG BAT FUSE 10 GAUGES FUSE 8 GRY WIRE HOT AT ALL TIMES HOT IN RUN, START I/P FUSE BLOCK (BODY BUILDER INSTALLED) (BEHIND DASH PANEL) LT BLU WIRE NCA WIRE ORG/ WIRE PNK WIRE PROVISION FOR BODY BUILDER BLUNT CUT WHT WIRE

AUXILIARY ENGINE COOLANT FAN (MOUNTED ON FRONT OF RADIATOR) BLK WIRE DK BLU WIRE ENG 1 FUSE 15 FUSIBLE LINK HOT AT ALL TIMES HOT IN RUN, START I/P FUSE BLOCK (BODY BUILDER INSTALLED) (BEHIND DASH PANEL) PNK WIRE RED WIRE

1996 VFTC 4.3L VIN W (L35) ENGINE 5.7L VIN R (L31) ENGINE CRANKSHAFT POSITION (CKP) SENSOR CRANKSHAFT POSITION SENSOR (CKP) ECM 1 FUSE ELECTRONIC IGNITION (EI) COIL DRIVER MODULE FUEL INJECTOR NO.1 FUEL INJECTOR NO.2 FUEL INJECTOR NO.3 FUEL INJECTOR NO.4 FUEL INJECTOR NO.5 FUEL INJECTOR NO.6 FUEL INJECTOR NO.7 FUEL INJECTOR NO.8 HOT IN RUN, START I/P FUSE BLOCK (DASH PANEL PROVIDED BY BODY BUILDER) (BODY BUILDER INSTALLED) IGNITION COIL INSTRUMENT CLUSTER PNK INSTRUMENT CLUSTER WIRE PNK WIRE VEHICLE CONTROL MODULE (VCM)

1996 VFTC 6.5L VIN Y A/C COMPRESSOR CLUTCH RELAY AUTOMATIC TRANSMISSION AUX FUSE BACK UP LAMPS SWITCH BRN WIRE CANADIAN MODELS ONLY CAVITY A) DAYTIME RUNNING LAMP (DRL) RELAY DAYTIME RUNNING LAMPS (DRL) CONTROL MODULE DIESEL ECM 1 FUSE FROM IGNITION SWITCH FUEL INJECTION PUMP FUEL SHUT-OFF SOLENOID GAS GAS MODELS ONLY GAUGES FUSE GENERATOR GENERATOR HOT IN RUN, START HTR BUS HTR FUSE I-3 FUSE I/P FUSE BLOCK (DASH PANEL PROVIDED BY BODY BUILDER) (BODY BUILDER INSTALLED) IGN BUS INSTRUMENT CLUSTER MANUAL TRANSMISSION ORG/ WIRE P/B BOOSTER FLUID FLOW, PRESSURE ALARM PARK/ NEUTRAL POSITION (PNP), BACKUP LAMPS SWITCH PNK PNK WIRE PNK WIRE SEAT BELT ALARM INSTRUMENT CLUSTER THIS CAN PLUG INTO TORQUE CONVERTER CLUTCH (TCC), STOP LAMPS SWITCH TRANSMISSION CONTROL MODULE (TCM) FUEL INJECTION PUMP FUEL SHUT-OFF SOLENOID TURN SIGNAL FLASHER TURN-B/U FUSE VEHICLE CONTROL MODULE (VCM) VEHICLE SPEED SENSOR (VSS) BUFFER W/BRAKE WARNING INDICATOR SYSTEM

1996 VFTC 7.4L VIN J (L29) ENGINE 7.4L VIN N 7.4L VIN N (L19), 6.5L VIN F (L65) ENGINES CRANKSHAFT POSITION SENSOR ECM 1 FUSE HOT IN RUN, START I/P FUSE BLOCK (MOUNTED ON THE I/P) IGNITION COIL IGNITION COIL DRIVER INJECTOR NO.1 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 INSTRUMENT CLUSTER ONLY PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) VEHICLE CONTROL MODULE (VCM) VEHICLE SPEED SENSOR BUFFER

1996 VFTC 6.5L VIN F PNK ONLY WIRE 7.4L VIN J (L29), 6.5L VIN F (L65) ENGINES 7.4L VIN J, 6.5L VIN F (L65) ENGINES ONLY PNK WIRE 7.4L VIN N A/C COMPRESSOR CONTROL RELAY AUTO APPLY PARK BRAKE SWITCH AUX CIRCUIT BREAKER BACKUP LAMP SWITCH BRN WIRE BUSS BAR CANADIAN MODELS CAVITY A) CRUISE CONTROL MODULE DAYTIME RUNNING LAMPS MODULE DAYTIME RUNNING LAMPS RELAY ENGINE FROM IGNITION SWITCH GAUGES FUSE GENERATOR HOT IN RUN, START HTR FUSE I-3 FUSE I/P AUXILIARY FUSE BLOCK (MOUNTED ON THE I/P FUSE BLOCK) AUTO APPLY FUSE I/P FUSE BLOCK (MOUNTED ON THE I/P) INSTRUMENT CLUSTER NCA WIRE ORG/ WIRE PARK BRAKE LOW PRESSURE SWITCH PARK/NEUTRAL POSITION (PNP), BACKUP LAMP SWITCH PNK PNK WIRE PNK WIRE PPL SEATBELTS/ LAMPS ALARM MODULE SPEED CONTROL SWITCH TORQUE CONVERTER CLUTCH, STOPLAMPS SWITCH TURBO CHARGER POWER VALVE SOLENOID TURN SIGNAL FLASHER TURN SIGNAL SWITCH TURN-B/U FUSE VEHICLE CONTROL MODULE (VCM)

1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID AUTOMATIC TRANSMISSION (A/T) (IF EQUIPPED) (REAR OF ENGINE) BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DK GRN/WHT WIRE ECM 2 FUSE 12 ENG 1 FUSE 15 FUEL INJECTOR NO.2 FUEL INJECTOR NO.1 FUEL INJECTOR NO.3 FUEL INJECTOR NO.4 FUEL INJECTOR NO.5 FUEL INJECTOR NO.6 GRY WIRE HEATED OXYGEN SENSOR, BANK 1 SENSOR 2 (EXHAUST PIPE BEHIND CATALYTIC CONVERTER) HOT IN RUN, START I/P FUSE BLOCK (DASH PANEL PROVIDED BY BODY BUILDER) (BODY BUILDER INSTALLED) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE PNK PNK PNK 2 3 4 5 WIRE PNK PNK PNK 3 4 5 WIRE PNK PNK PNK WIRE PNK PNK WIRE PNK PPL 1 2 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE PRESSURE CONTROL SOLENOID (PCS) RED WIRE RED/BLK WIRE REV TAN WIRE TAN/WHT WIRE TCC PWM SOLENOID TRANS FUSE 17 TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR TRANSMISSION RANGE (TR) PRESSURE SWITCH ASSEMBLY WHT WIRE YEL WIRE YEL/BLK WIRE

3 4 5 6 7 8 9 10 11 12 13 14 15 16 PNK PNK WIRE A/C COMPRESSOR HIGH PRESSURE CUT-OFF SWITCH (REAR OF A/C COMPRESSOR) BLK WIRE BREAKOUT) BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG BAT FUSE 10 ENGINE COOLANT TEMPERATURE (ECT) SENSOR (TOP FRONT OF ENGINE) FROM ECT SENSOR BREAKOUT) FROM TPS BREAKOUT) FUEL GAUGE FUEL PUMP SWITCH, ENGINE OIL PRESSURE GAUGE SENSOR (TOP LEFT REAR OF ENGINE) FUEL SENDER, FUEL PUMP (TOP OF FUEL TANK) GAUGES FUSE 8 GRY WIRE HOT AT ALL TIMES HOT IN RUN, START I/P FUSE BLOCK (DASH PANEL PROVIDED BY BODY BUILDER) (BODY BUILDER INSTALLED) INSTRUMENT CLUSTER LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION INDICATOR LAMP MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (TOP REAR OF ENGINE) MAP REF LO MASS AIR FLOW SENSOR (MAF) (MOUNTED IN FRESH AIR INTAKE, BEHIND AIR FILTER BOX) NCA WIRE OIL PRESS GAUGE ORG/ WIRE PNK PNK PNK 2 3 4 5 WIRE PNK PNK WIRE PNK WIRE PPL RED WIRE RED/BLK WIRE REF LO TEMP REF THROTTLE POSITION (TP) SENSOR (ON THROTTLE BODY, TOP OF ENGINE) SENSOR BREAKOUT) SPEEDO- METER TACHO- METER TAN WIRE WHT WIRE YEL WIRE

1-2 SHIFT SOLENOID 15 16 17 PPL PPL 2-3 SHIFT SOLENOID AUTOMATIC TRANSMISSION (A/T) (IF EQUIPPED) (REAR OF ENGINE) BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM 1 FUSE 12 ENG 1 FUSE 15 FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 FUEL INJECTOR 6 FUEL INJECTOR 7 FUEL INJECTOR 8 GRY WIRE HOT IN RUN, START I/P FUSE BLOCK (DASH PANEL PROVIDED BY BODY BUILDER) (BODY BUILDER INSTALLED) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE PNK 5 6 WIRE PNK PNK 30 31 WIRE PNK PNK PNK 1 2 3 WIRE PNK PNK PNK PNK 1 2 3 4 WIRE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 8 9 10 11 12 13 14 15 16 17 PPL/ WHT WIRE PPL/WHT WIRE PRESSURE CONTROL SOLENOID (PCS) RED WIRE RED/BLK WIRE REV TAN WIRE TAN/ WHT WIRE TAN/WHT WIRE TCC PWM SOLENOID TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION RANGE (TR) PRESSURE SWITCH ASSEMBLY WHT WIRE YEL WIRE YEL/BLK WIRE