GMC Forward Control P3500 (1985-1999) Wiring diagram engine performance 5.7l vin rs

14 15 16 PPL PPL 2-3 SHIFT SOL CTRL ANTI-LOCK BRAKE SYSTEM BLK WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CAM POSIT SENS RTN FUEL LEV SIGNAL PPL CAM POSIT SENS SIG CAMSHAFT POSITION (CMP) SENSOR (INTERNAL TO DISTRIBUTOR) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/ WHT WIRE DK GRN/WHT WIRE FUEL TANK PRESSURE SENSOR (AT FUEL TANK) GRY WIRE HALL EFFECT SENSOR HALL EFFECT SENSOR PNK WIRE IDLE AIR CONTROL (IAC) VALVE KNOCK SENS SIG KNOCK SENSOR (KS) (LOWER RIGHT SIDE OF ENGINE) LT BLU/ BLK WIRE LT BLU/ WHT WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WHT/ WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAP SENSOR IN IAT SENS SIG ECT SENSOR IN THROTTLE POSIT SENS TANK PRESSURE NCA WIRE PNK PNK 1 2 WIRE PNK PNK 30 31 WIRE PNK WIRE PNK/BLK WIRE PPL PPL CKP SENS RTN VSS RTN VSS SIG PPL PPL PPL/WHT WIRE PURGE VENT RED/BLK WIRE TAN WIRE TAN/ WHT WIRE TAN/WHT WIRE VEHICLE SPEED OUT VEHICLE SPEED SENSOR (VSS) (LEFT SIDE OF TRANSMISSION) WHT PPL/ WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOLENOID 14 15 16 PPL PPL 2-3 SHIFT SOLENOID AUTOMATIC TRANSMISSION (A/T) (IF EQUIPPED) (REAR OF ENGINE) BLK WIRE BLU WIRE BLU/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 EXHAUST GAS RECIRCULATION (EGR) VALVE (TOP FRONT OF ENGINE) 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 (BEHIND DASH PANEL) (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 1 2 WIRE PNK PNK 30 31 WIRE PNK PNK PNK PNK 1 2 3 4 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 8 9 10 11 12 13 14 15 16 17 PPL/WHT WIRE PRESSURE CONTROL SOLENOID (PCS) RED WIRE RED/BLK WIRE REV TAN WIRE TAN/WHT WIRE TCC PWM SOLENOID TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION RANGE (TR) PRESSURE SWITCH ASSEMBLY WHT PPL/ WIRE WHT TAN/ WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

5 6 7 8 9 10 11 12 PNK PNK WIRE A/C COMPRESSOR HIGH PRESSURE CUT-OFF SWITCH (REAR OF A/C COMPRESSOR) BLK WIRE 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 TP SENSOR BREAKOUT) FUEL GAUGE 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 (BEHIND DASH PANEL) (BODY BUILDER INSTALLED) INSTRUMENT CLUSTER LT BLU/WHT WIRE LT GRN WIRE MAP MASS AIR FLOW (MAF) SENSOR (MOUNTED IN FRESH AIR INTAKE, BEHIND AIR FILTER BOX) NCA WIRE ORG/ WIRE PNK 10 11 12 13 14 15 16 17 WIRE PNK 5 6 WIRE PNK PNK PNK PNK 1 2 3 4 WIRE PNK WIRE PPL PPL 1 2 PPL 8 9 RED WIRE RED/BLK WIRE REF LO REF LO TEMP REF THROTTLE POSITION (TP) SENSOR (ON THROTTLE BODY, TOP OF ENGINE) SERVICE ENGINE SOON INDICATOR SPEEDO- METER TACHO- METER TAN WIRE TRANS FUSE 17 WHT WIRE YEL WIRE

389 419 VSS OUTPUT MIL CTRL 440 1225 1224 IGN FEED RANGE SIG "B" RANGE SIG "A" 5 6 7 8 9 PNK PNK WIRE A/C REQUEST SIG A/C SW IN A/C SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLUTCH PEDAL POSITION SWITCH (TOP OF CLUTCH PEDAL SUPPORT) CLUTCH SIG CYLINDER 1 CYLINDER 4 CYLINDER 5 CYLINDER 3 CYLINDER 6 CYLINDER 7 CYLINDER 2 CYLINDER 8 DISTRIBUTOR (TOP REAR OF ENGINE) DK BLU WIRE DK BLU/ WHT WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-BAT FUSE 6 EGR CTRL ELECTRONIC BRAKE CONTROL MODULE FEED IGNITION FUEL PUMP PRIME CONNECTOR (TAPED TO FUEL PUMP RELAY BREAKOUT) GROUND GRY WIRE HIGH VOLTAGE COIL WIRE HOT AT ALL TIMES HOT IN RUN I-3 FUSE 9 I/P FUSE BLOCK (BEHIND DASH PANEL) (BODY BUILDER INSTALLED) IGN FEED IGNITION COIL (TOP RIGHT SIDE OF ENGINE) IGNITION CONTROL MODULE (RIGHT TOP OF ENGINE, AT IGNITION COIL) LT BLU/WHT WIRE ORG/ WIRE PCS SOL (HI) INPUT SPD SENS SIG INPUT SPD SENS RTN TIMING CTRL SIG PCS SOL (LO) VCM GND VCM GND GND 451 451 470 PNK IGN FEED WIRE PNK WIRE PPL PPL 1 2 PPL 2 4 5 16 DATA LINK CONNECTOR (DLC) (BELOW DASH, NEAR STEERING COLUMN) PPL ANTI-LOCK BRAKE SYSTEM PPL FUEL LEV PPL PPL 420 1807 BRAKE SIG SERIAL DATA RANGE SIG "C" RED WIRE RED/ BLK WIRE RED/BLK WIRE RETURN CONTROL TIMING SIGNAL CONTROL TIMING SPARK PLUGS TORQUE CONVERTER CLUTCH, STOP LAMP SWITCH (AT BRAKE PEDAL SUPPORT) TRANSMISSION INPUT SPEED SENSOR (LEFT SIDE OF TRANSMISSION, NEAR THE MIDDLE) WHT WIRE WHT/BLK WIRE