GMC Rally G2500 (1985-1995) gauges fuse Wiring diagrams

1-2 SHIFT SOL TCC SOL 2-3 SHIFT SOL ACCELERATOR PEDAL POSITION (APP) MODULE (TOP OF ACCEL- ERATOR BRACKET) APP #3 APP #3 SENSOR SIG APP 1 APP 2 BATTERY JUNCTION BLOCK BLK PNK/ WIRE BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE DATA LINK CONNECTOR (BELOW LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE ECM 1 FUSE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (FRONT OF LEFT CYLINDER HEAD) FUSIBLE LINK (20 GA- GAUGES FUSE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK IGNITION FEED 3-2 CONTROL SOL DIAGNOSTIC REQUEST INSTRUMENT CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (RIGHT KICK PANEL) PPL PPL TCC/BRAKE SW PPL/WHT WIRE PRESSURE CONTROL SOLENOID RANGE MODE SELECTOR RED WIRE RED/BLK WIRE SERVICE ENGINE SOON INDIC SPEED SENSOR (LEFT REAR SIDE OF TRANSMISSION) TAN WIRE TAN/BLK WIRE TCC/STOP LAMP SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TRANS FLUID TEMP (TFT) SENSOR 3-2 SHIFT SOL TRANS FUSE 20 TRANSMISSION VEHICLE SPEED SENSOR BUFFER (PARKING BRAKE SUPPORT BRACKET) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BAT VOLT SENSE INPUT BATTERY JUNCTION BLOCK BLK WIRE BLK/RED WIRE FORWARD BATTERY FUSE BLOCK FUSIBLE LINK (12 GA. RUST) GAUGES FUSE GENERATOR (RIGHT FRONT OF ENGINE) GLOW PLUG CONTROLLER (LEFT SIDE OF ENGINE) HOT IN START OR RUN INSTRUMENT CLUSTER PNK WIRE PNK/BLK WIRE REAR BATTERY RECTIFIER BRIDGE RED WIRE REGULATOR (SOLID STATE) STARTER SOLENOID STATOR SW BAT FIELD (ROTOR) TURN ON INPUT VOLT- METER

1-2 SHIFT SOL 3-2 SOL 2-3 SHIFT SOL BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK BLU/WHT WIRE ECM I FUSE ECM-B FUSE ENGINE SPEED SENSOR (TOP CENTER OF ENGINE) FUSE BLOCK GAUGES FUSE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT CLUSTER LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK RANGE SIGNAL A RANGE SIGNAL B RANGE SIGNAL C WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RANGE MODE SELECTOR PRESSURE CONTROL SOLENOID RED WIRE RED/BLK WIRE SERVICE TRANSMISSION INDICATOR SYSTEM GROUND SYSTEM GROUND 452 416 SENSOR GROUND 5 VOLTS REF TAN/WHT WIRE TCC/BRAKE SWITCH (BRAKE PEDAL BRACKET) THROTTLE POSITION SENSOR (RIGHT SIDE OF THROTTLE BODY) TRANS FUSE TRANS- MISSION TEMP SENSOR TRANSMISSION TRANSMISSION CONTROL MODULE (TCM) (RIGHT KICK PANEL) TRANSMISSION INPUT SHAFT SPEED SENSOR (LEFT FRONT SIDE OF TRANSMISSION) VEHICLE SPEED SENSOR (REAR OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER VEHICLE SPD OUTPUT VSS INPUTS WHT WIRE WHT/BLK WIRE YEL/BLK WIRE

BAT VOLT SENSE INPUT BATTERY BATTERY JUNCTION BLOCK BLK WIRE FUSE BLOCK FUSIBLE LINK (12 GA. RUST) GAUGES FUSE GENERATOR (RIGHT FRONT OF ENGINE) HOT IN START OR RUN INSTRUMENT CLUSTER PNK WIRE PNK/BLK WIRE RECTIFIER BRIDGE RED WIRE REGULATOR (SOLID STATE) STARTER MOTOR (LOWER RIGHT REAR OF ENGINE) STATOR SW BAT FIELD (ROTOR) TURN ON INPUT VOLT- METER

1995 VFTC BLK WIRE BLU WIRE BRAKE FUSE BRAKE IND BRAKE PRESSURE MODULATOR VALVE (UNDER RIGHT SIDE OF VEHICLE, AT FRAME RAIL) BRAKE PRESSURE WARNING SWITCH (REAR OF BRAKE MODULATOR VALVE) BRAKE WARN IND BPMV GND COLUMN) DATA LINK CONNECTOR (BELOW STEERING DAYTIME RUNNING LAMPS MODULE (LEFT SIDE OF I/P) IGNITION SWITCH DIODE ARRAY MODULE (UNDER LEFT SIDE OF I/P) DK GRN WIRE FUSE BLOCK FUSIBLE LINK (16 GA-RUST) GAUGES FUSE GRN WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START I/P IGN FEED ABS IND BRAKE SW INSTRUMENT CLUSTER LEFT FRONT WHEEL SENSOR LF SENSOR LO RF SENSOR LO LT BLU WIRE NCA WIRE PARK BRAKE SWITCH PNK WIRE PNK/WHT WIRE PPL PUMP MOTOR PWR PUMP MOTOR GND RED WIRE RF SENSOR HI LF SENSOR HI RIGHT FRONT WHEEL SENSOR TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) PPL VEHICLE SPEED IN DIAG REQUEST VEHICLE SPEED OUTPUT VEHICLE SPEED SENSOR BUFFER (ON PARKING BRAKE SUPPORT BRACKET) WHT WIRE YEL WIRE

1995 VFTC BAT VOLT SENSE INPUT BATTERY JUNCTION BLOCK BLK WIRE BLK/RED WIRE DIESEL FORWARD BATTERY FUSE BLOCK FUSIBLE LINK (12 GA. RUST) GAUGES FUSE GENERATOR GLOW PLUG CONTROLLER (LEFT SIDE OF ENGINE) HOT IN START OR RUN INSTRUMENT CLUSTER PNK WIRE PNK/BLK WIRE REAR BATTERY RECTIFIER BRIDGE RED WIRE REGULATOR (SOLID STATE) STARTER SOLENOID STATOR SW BAT FIELD (ROTOR) TURN ON INPUT VOLT- METER

AUXILIARY COOLING FAN AUXILIARY COOLING FAN PRESSURE SWITCH (RIGHT SIDE OF ENGINE) AUXILIARY COOLING FAN RELAY (TOP LEFT SIDE OF SHIPPING PANEL) AUXILIARY COOLING FAN TEMPERATURE SWITCH (RIGHT SIDE OF ENGINE) BLK WIRE BLK/RED WIRE DK GRN WIRE FUSE BLOCK GAUGES FUSE HOT AT ALL TIMES FUSIBLE LINK HOT IN RUN PNK/WHT WIRE RED WIRE

BLK WIRE DAYTIME RUNNING LAMP INDICATOR DAYTIME RUNNING LAMPS MODULE (BEHIND LEFT SIDE OF I/P) DAYTIME RUNNING LAMPS RELAY (BEHIND LEFT SIDE OF I/P, ABOVE STEERING COLUMN) DK BLU/WHT WIRE DRL FUSE FUSE BLOCK GAUGES FUSE GRN WIRE HEAD PARK HEADLAMP DIMMER SWITCH HEADLIGHT SWITCH ASSEMBLY HI BEAM INDICATOR HI LO HOT AT ALL TIMES HOT IN RUN OR START IGNITION LAMP FEED HI BEAM FEED HI BEAM INDICATOR OUTPUT TO RELAY GROUND INSTRUMENT CLUSTER LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LT GRN WIRE LT GRN/BLK WIRE LT LT OFF OFF HEAD ORG/ WIRE PARK PARK BRAKE WARNING SWITCH (ON PARK BRAKE SUPPORT BRACKET) PNK/BLK WIRE PPL PPL BULB CHECK RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP TAN WIRE WHT WIRE YEL WIRE

1995 VFTC AIR BAG FUSE AIR BAG WARNING LAMP ARMING SENSOR MODULE (CENTER CROSS- MEMBER, ABOVE TRANSMISSION) BLK WIRE BLK/WHT WIRE BRN WIRE DATA LINK CONNECTOR (BEHIND LEFT SIDE OF I/P) DIAGNOSTIC ENERGY RESERVE MODULE (DERM) (BEHIND LEFT SIDE OF I/P) DK GRN WIRE GAUGES FUSE GRY WIRE HOT IN RUN, BULB TEST OR START HOT IN START I/P FUSE BLOCK SIR CRANK FUSE INSTRUMENT CLUSTER LEFT HAND DISCRIMINATING SENSOR (LEFT SIDE OF LOWER RADIATOR SUPPORT) LT GRN WIRE NCA WIRE ORG/BLK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (BEHIND RIGHT KICK PANEL) PPL/WHT WIRE RIGHT HAND DISCRIMINATING SENSOR (RIGHT SIDE OF LOWER RADIATOR SUPPORT) SAFETY BELT SWITCH (LEFT SEAT BUCKLE) SHORTING BAR SIR COIL ASSEMBLY (TOP OF STEERING COLUMN) STEERING WHEEL INFLATOR MODULE (MOUNTED ON STEERING WHEEL) WARNING SYSTEMS (AUDIO ALARM) WHT WIRE YEL WIRE YEL/BLK WIRE

AUDIO ALARM MODULE BLK WIRE FASTEN BELTS INDICATOR FUSE BLOCK GAUGES FUSE GRY WIRE HORN/DM FUSE HOT AT ALL TIMES HOT IN RUN OR START HOT WITH HEADLIGHT SWITCH IN PARK OR HEAD INSTR LPS FUSE INSTRUMENT CLUSTER ORG/ WIRE PNK/BLK WIRE YEL WIRE