GMC Rally G2500 (1985-1995) run Wiring diagrams

1995 VFTC ACCY BLK WIRE BRN WIRE BULB TEST BUS BAR GROUND DAYTIME RUNNING LAMP INDICATOR DAYTIME RUNNING LAMPS MODULE (ON LEFT SIDE OF I/P) DAYTIME RUNNING LAMPS RELAY (ON LEFT SIDE OF I/P) DIODE ARRAY MODULE (UNDER LEFT SIDE OF I/P) DK BLU/WHT WIRE DK GRN WIRE DRL FUSE FOG LAMP ON INDICATOR FOG LAMP RELAY (BEHIND LEFT SIDE OF I/P) FOG LAMP SWITCH ILLUM LAMP FUSE BLOCK GAGES FUSE GRN WIRE GROUND GRY WIRE HEAD PARK HEADLAMP DIMMER SWITCH HEADLIGHT SWITCH ASSEMBLY HI BEAM INDICATOR HORN/DIM FUSE HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTR LPS FUSE INSTRUMENT CLUSTER LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LOCK OFF LT GRN WIRE LT GRN/BLK WIRE LT LT NCA WIRE OFF OFF HEAD ORG/ WIRE PARK PARK BRAKE SWITCH (ON PARK BRAKE PEDAL SUPPORT) PNK/BLK WIRE PPL PPL/WHT WIRE RIGHT FOG LAMP LEFT FOG LAMP RIGHT LOW BEAM HEADLAMP RIGHT HIGH BEAM HEADLAMP RUN WIRE TAN WIRE TAN/WHT WIRE VARIABLE VOLTAGE W/ HEADLIGHT SWITCH IN PARK OR HEAD, RHEOSTAT ADJUSTED WHT WIRE YEL WIRE

1995 VFTC ACCY BLK WIRE BRN WIRE BULB TEST BUS BAR GROUND DAYTIME RUNNING LAMP INDICATOR DAYTIME RUNNING LAMPS MODULE (ON LEFT SIDE OF I/P) DAYTIME RUNNING LAMPS RELAY (ON LEFT SIDE OF I/P) DIODE ARRAY MODULE (UNDER LEFT SIDE OF I/P) DK BLU/WHT WIRE DK GRN WIRE DRL FUSE FOG LAMP ON INDICATOR FOG LAMP RELAY (BEHIND LEFT SIDE OF I/P) FOG LAMP SWITCH ILLUM LAMP FUSE BLOCK GAGES FUSE GRN WIRE GROUND GRY WIRE HEAD PARK HEADLAMP DIMMER SWITCH HEADLIGHT SWITCH ASSEMBLY HI BEAM INDICATOR HI HI LO LO HORN/DIM FUSE HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTR LPS FUSE INSTRUMENT CLUSTER LEFT HEADLAMP ASSEMBLY RIGHT HEADLAMP ASSEMBLY LOCK OFF LT GRN WIRE LT GRN/BLK WIRE LT LT NCA WIRE OFF OFF HEAD ORG/ WIRE PARK PARK BRAKE SWITCH (ON PARK BRAKE PEDAL SUPPORT) PNK/BLK WIRE PPL PPL/WHT WIRE RIGHT FOG LAMP LEFT FOG LAMP RUN WIRE TAN WIRE TAN/WHT WIRE VARIABLE VOLTAGE W/ HEADLIGHT SWITCH IN PARK OR HEAD, RHEOSTAT ADJUSTED WHT WIRE YEL WIRE

ACC RADIO FUSE ACCY ACCY BULB TEST LOCK ACCY BULB TEST LOCK OFF AUTO APPLY PARK BRAKE AUX CB AUX CIRCUIT BREAKER HTR FUSE AUXILIARY COOLING FAN RELAY AUXILIARY COOLING FAN RELAY DAYTIME RUNNING LAMPS BATTERY BATTERY JUNCTION BLOCK BLK WIRE BLK/RED WIRE BRAKE WARNING ALARM BUZZER BRN WIRE BULB TEST DAYTIME RUNNING LAMPS RELAY DAYTIME RUNNING LAMPS MODULE DK GRN WIRE FROM PANEL DIMMER SWITCH ASSEMBLY (INTERIOR LIGHTS SYSTEM) FUEL PUMP RELAY FUEL PUMP OIL PRESSURE SWITCH HAZARD FLASHER FUSE BLOCK FUSIBLE FUSIBLE LINK GENERATOR GRY WIRE HEADLIGHT SWITCH HORN RELAY HORN/DM I/P CLUSTER BRAKE PRESSURE WARNING SWITCH IGNITION SWITCH INSTRUMENT CLUSTER LINK LOCK OFF LPS BUS GAGES FUSE INSTR-LPS FUSE OFF ORG/ WIRE PARK BRAKE WARNING SWITCH PCM PNK WIRE PNK/ WHT WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE PPL PWR ECM-BAT CIRCUIT BREAKER FUSE RED WIRE RELAY RUN WIRE SHUNT STARTER MOTOR STOP- HZ FUSE STOPLAMP SWITCH TAIL LPS FUSE FUSE TAN/WHT WIRE TO ALT, ECM-CRNK, TURN-B/U, TRANS, INJ FUSES AND IGNITION COIL TRANSMISSION POSITION INDICATOR LAMP WHT WIRE WINDSHIELD WIPER MOTOR WIPER SWITCH MODULE WIPER FUSE YEL WIRE

1995 VFTC ACCY BATTERY (GASOLINE) BATTERY JUNCTION BLOCK BLK WIRE BULB TEST DIESEL DIESEL ONLY FORWARD BATTERY FUSIBLE LINK (16 GA-RUST) FUSIBLE LINK (20 GA-RUST) GLOW PLUG CONTROLLER (LEFT SIDE OF ENGINE) HOLD-IN WINDING PULL-IN WINDING IGNITION SWITCH LOCK OFF PPL REAR BATTERY RED WIRE RUN WIRE STARTER MOTOR STARTER SOLENOID SOLENOID CONTACTS SUPPORT)

* W/ SCHOOL BUS EQUIPMENT) 1995 VFTC ACCY BATTERY JUNCTION BLOCK BLK WIRE BULB TEST CLUTCH START SWITCH (ON CLUTCH PEDAL SUPPORT BRACKET) FUSIBLE LINK (16 GA-RUST) FUSIBLE LINK E (10 GA-RUST) GENERATOR (FRONT OF ENGINE) BAT HOLD-IN WINDING PULL-IN WINDING IGNITION SWITCH LOCK OFF PPL PPL A/T M/T PPL/WHT WIRE RED WIRE RIGHT (OR FRONT ) BATTERY RUN WIRE STARTER MOTOR STARTER RELAY (LOWER LEFT SIDE OF ENGINE) STARTER SOLENOID SOLENOID CONTACTS

1995 VFTC ACCY BATTERY BATTERY JUNCTION BLOCK BLK WIRE BULB TEST CLUTCH START SWITCH (ON CLUTCH PEDAL SUPPORT BRACKET) FUSIBLE LINK B (14 GA. RUST) HEAD HOLD-IN WINDING PULL-IN WINDING IGNITION SWITCH LOCK OFF PPL PPL A/T M/T RED WIRE RUN WIRE SOLENOID CONTACTS STARTER MOTOR STARTER SOLENOID

3 121 PNK WIRE ACCY BLK WIRE BLK/RED WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) FUSE BLOCK GAGES FUSE GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IGNITION COIL (TOP RIGHT REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (LEFT REAR OF ENGINE, NEAR OIL PRESSURE SENDER) LOCK OFF LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION (SERVICE ENGINE SOON) INDICATOR MANIFOLD ABSOLUTE PRESSURE SENSOR (ABOVE VALVE COVER) NCA WIRE ORG/ WIRE PNK 22 23 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 20 21 PPL 3 4 PPL/WHT WIRE PROVISIONS FOR TACHOMETER RED WIRE RED/BLK WIRE RUN WIRE TAN/BLK WIRE TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANS FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1995 VFTC 3 121 PNK WIRE ACCY AUXILIARY FUSE BLOCK BLK WIRE BLK/RED WIRE BLK/YEL WIRE BRAKE FUSE BRN WIRE BRN/WHT WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (ON INTAKE MANIFOLD) FUSE BLOCK GAGES FUSE GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START IGNITION COIL (TOP RIGHT REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (LEFT REAR OF ENGINE, NEAR OIL PRESSURE SENDER) LOCK OFF LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION (SERVICE ENGINE SOON) INDICATOR MANIFOLD ABSOLUTE PRESSURE SENSOR (ABOVE VALVE COVER) NCA WIRE ORG/BLK WIRE PNK PPL 23 24 WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PPL 21 22 PPL 3 4 PPL/WHT WIRE RED WIRE RED/BLK WIRE RUN WIRE TACHOMETER TEST LEAD TAN/BLK WIRE TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) THROTTLE POSITION SENSOR (ON THROTTLE BODY) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

3 121 PNK WIRE 4.3L AND 7.4L 5.7L ACCY ALT FUSE BLK WIRE BLK/RED WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) FUSE BLOCK GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IDLE SPEED ACTUATOR CONTROL SOLENOID (NO LOCATION AVAILABLE) IGNITION COIL (TOP RIGHT REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (LEFT REAR OF ENGINE, NEAR OIL PRESSURE SENDER) KNOCK SENSOR MODULE (TOP RIGHT SIDE OF ENGINE) LOCK OFF LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION (SERVICE ENGINE SOON) INDICATOR MANIFOLD ABSOLUTE PRESSURE SENSOR (ABOVE VALVE COVER) NCA WIRE ORG/ WIRE PNK 26 27 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 2 3 4 PPL 24 25 PPL/WHT WIRE PROVISIONS FOR TACHOMETER RED WIRE RED/BLK WIRE RUN WIRE TAN/BLK WIRE TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANS FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

3 121 PNK WIRE ACCY BLK WIRE BLK/RED WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) FUSE BLOCK GAGES FUSE GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IGNITION COIL (TOP RIGHT REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (LEFT REAR OF ENGINE, NEAR OIL PRESSURE SENDER) LOCK OFF LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION (SERVICE ENGINE SOON) INDICATOR MANIFOLD ABSOLUTE PRESSURE SENSOR (ABOVE VALVE COVER) NCA WIRE ORG/ WIRE PNK 22 23 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 20 21 PPL 3 4 PPL/WHT WIRE PROVISIONS FOR TACHOMETER RED WIRE RED/BLK WIRE RUN WIRE TAN/BLK WIRE TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANS FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE