Buick Regal III (1988-1997) hot in run, bulb test or start Wiring diagrams

ABS ENABLE RELAY ABS MAXI- FUSE ABS MOTOR PACK (LEFT REAR OF ENGINE COMPT, MOUNTED TO MASTER CYLINDER) ABS WARN IND B/H CONN BLK WIRE BRAKE WARN IND BRN WIRE CHEVROLET CHEVROLET, PONTIAC BUICK, OLDSMOBILE DATA LINK CONNECTOR (ON BOTTOM OF I/P, RIGHT OF STEERING COLUMN) DK GRN WIRE ELECTRONIC POWER STEERING SYSTEM EX CHEVROLET FUSE 10 FUSE 23 FUSE 33 FUSE 39 FUSE BLOCK GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START INDICATOR CONTROL INSTRUMENT CLUSTER LEFT FRONT ABS SOLENOID (LEFT REAR OF ENGINE COMPT, MOUNTED ON MASTER CYLINDER) LEFT FRONT MOTOR LEFT FRONT WHEEL SENSOR LEFT REAR WHEEL SENSOR LOW TRAC IND LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PNK WIRE PPL PPL PNK WIRE REAR MOTOR RED WIRE RIGHT FRONT ABS SOLENOID (LEFT REAR OF ENGINE COMPT, MOUNTED ON MASTER CYLINDER) RIGHT FRONT MOTOR RIGHT FRONT WHEEL SENSOR RIGHT REAR WHEEL SENSOR STRNG WHEEL SENS IN PWR STRNG SOL BATT IGN BRAKE IN TAN WIRE TAN/WHT WIRE TCC BRAKE SWITCH (ON BRAKE PEDAL BRACKET) TO VAR P/S FUSE UNDERHOOD ELECTRICAL CENTER #2 WHT WIRE YEL WIRE

1995 VFTC B/H CONN BLK WIRE BRN (OR PNK) WIRE BRN WIRE CHEVROLET CRUISE CONTROL MODULE (LEFT SIDE OF ENGINE COMPARTMENT, NEAR STRUT TOWER) CRUISE CONTROL RELEASE SWITCH (ON BRAKE PEDAL SUPPORT) CRUISE ENABLE CRUISE STATUS CRUISE FUSE CRUISE IND CRUISE INHIBIT TEST TERMINAL DK BLU WIRE DK GRN WIRE FUSE 15 FUSE 23 FUSE 39 FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START INSTRUMENT CLUSTER (BUICK ONLY) MULTI-FUNCTION LEVER OFF ON CRUISE SWITCH R/A OFF ON R/A RESUME/ ACCEL SWITCH ORG/ WIRE PNK EX CHEVROLET WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (RIGHT SIDE OF ENGINE COMPARTMENT) SET SWITCH STOP LAMP/TORQUE CONVERTER CLUTCH SWITCH (ON BRAKE PEDAL SUPPORT) UNDERHOOD ELECTRICAL CENTER #1 (VIN L ONLY) UNDERHOOD ELECTRICAL CENTER 1 VIN M VIN X VIN L VSS OUTPUT WHT WIRE

1995 VFTC AIR CONDITIONING SYSTEM B/H CONN BLK WIRE BLU WIRE BRN WIRE CENTER HIGH MOUNTED STOPLIGHT DAYTIME RUNNING LIGHTS CONTROL MODULE (BEHIND LEFT SIDE OF I/P) DK BLU WIRE FUSE 23 FUSE 30 FUSE 5 FUSE BLOCK GRN WIRE HAZARD HAZARD FLASHER (BEHIND LEFT SIDE OF I/P) HEADLIGHT SWITCH HOT AT ALL TIMES HOT AT ALL TIMES PARK LPS FUSE HOT IN RUN, BULB TEST OR START INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT LEFT FRONT PARK/TURN LIGHT LEFT FRONT SIDE MARKER LIGHT LEFT TURN IND LT BLU WIRE NORMAL OFF HEAD PK ORG/ WIRE PNK WIRE PPL LT PPL WARNING SYSTEMS RIGHT RIGHT FRONT PARK/TURN LIGHT RIGHT FRONT SIDE MARKER LIGHT RIGHT TURN IND STOPLIGHT/ TORQUE CONVERTER CLUTCH SWITCH (ON BRAKE PEDAL SUPPORT) TO FOG LIGHT SWITCH TO TAILLIGHTS TURN FLASHER (BEHIND LEFT SIDE OF I/P) TURN SIGNAL SWITCH UNDERHOOD ELECTRICAL CENTER #2 W/ LUGGAGE RACK DK W/ SPOILER W/O LUGGAGE RACK OR SPOILER WARNING SYSTEMS WHT WIRE YEL WIRE

1074 1073 KEY RES IN KEY RES IN 1995 VFTC 640 339 PNK 229 625 728 WIRE ACCY BULB TEST LOCK OFF BAT IGN ENABLE OUT RLY CNTRL IND CNTRL BLK WIRE DK BLU WIRE FUEL ENABLE FUSE 10 FUSE 12 FUSE 39 FUSE BLOCK (RIGHT SIDE OF I/P) GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IGNITION KEY IGNITION KEY LOCK CYLINDER IGNITION SWITCH INSTRUMENT CLUSTER NCA WIRE ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RESISTOR PELLET PPL/ RUN WIRE SECURITY INDICATOR STARTER SOLENOID STARTING/ CHARGING SYSTEM THEFT DETERRENT MODULE (BEHIND RIGHT SIDE OF I/P) THEFT DETERRENT RELAY (BEHIND RIGHT SIDE OF I/P) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1829 1829 PNK PNK KEY RES IN KEY RES IN WIRE 1995 VFTC ACCY BAT IGN ENABLE OUT RLY CNTRL IND CNTRL PNK WIRE BLK WIRE BULB TEST DATA LINK CONNECTOR (BOTTOM OF I/P, RIGHT OF STEERING COLUMN) DK BLU WIRE FUEL ENABLE FUSE 10 FUSE 12 FUSE BLOCK (RIGHT SIDE OF I/P) GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IGNITION SWITCH LOCK OFF ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) PPL RUN WIRE STARTER SOLENOID STARTING/ CHARGING SYSTEM THEFT DETERRENT MODULE (BEHIND RIGHT SIDE OF I/P) THEFT DETERRENT RELAY (BEHIND RIGHT SIDE OF I/P) YEL WIRE YEL/BLK WIRE

401 400 416 PPL 412 413 PPL 83 697 CRUISE CONTROL MODULE A/C CLUTCH RELAY A/C CLUTCH RELAY CONTROL MALFUNCTION IND CONTROL A/C ON IN A/C SENSOR (LEFT FRONT OF ENGINE COMPARTMENT) A/C SENSOR IN FUEL PUMP MOTOR FEED BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CANISTER PURGE CONTROL CONVENIENCE CENTER COOLANT TEMP SENSOR (TOP LEFT SIDE OF ENGINE BLOCK) CRUISE DISABLE SOL A CONTROL SOL B CONTROL SOL C CONTROL BATTERY BATTERY GROUND DATA LINK CONNECTOR (LOWER LEFT HUSH PANEL) DIGITAL EXHAUST GAS RECIRCULATION ASSEMBLY (TOP LEFT REAR OF ENGINE BLOCK) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BAT FUSE ENG EMIS FUSE FUSE 39 ENGINE OIL LEVEL SENSOR EVAPORATIVE EMISSION CANISTER PURGE VALVE (TOP REAR OF ENGINE, ON INTAKE PLENUM) FAN CONTROL RELAY FAN RELAY CONTROL FAN RELAY CONTROL FUEL PUMP RELAY CTRL GRY WIRE HEATED OXYGEN SENSOR (REAR OF ENGINE, IN EXHAUST MANIFOLD) HEATER, A/C CONTROL ASSEMBLY HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START IDLE AIR CTRL VALVE (TOP OF ENGINE ON FRONT OF THROTTLE BODY) INSTRUMENT CLUSTER LOW OIL INDIC INSTRUMENT CLUSTER SYSTEM INTAKE AIR TEMP SENSOR (LEFT FRONT OF ENGINE COMPT ON AIR CLEANER) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MALFUNCTION INDICATOR MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) MAP SENSOR IN TPS SENSOR IN ECT SENSOR IN TRANS TEMP SENSOR IN NCA WIRE OIL LEVEL SENSOR IN SENSOR GROUND SENSOR GROUND SENSOR GROUND ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL OUT SERIAL DATA IN/OUT PNK WIRE PPL RED WIRE RED/BLK WIRE SECOND GEAR START REQUEST SENSOR GROUND BRAKES APPLIED IN PNP SWITCH IN SHIFT SOL A OUT SHIFT SOL B OUT TCC SOL OUT LOW OIL IND CTRL TCC CONTROL SOL A SOL B SOL C TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR (REAR OF ENGINE, RIGHT SIDE OF THROTTLE BODY) UNDERHOOD ELECTRICAL CENTER 1 VEHICLE SPEED SENSOR (RIGHT REAR OF ENGINE ON TRANSAXLE) WHT WIRE YEL WIRE YEL/BLK WIRE

ANTI-THEFT SYSTEM IN AUTOMATIC TRANSAXLE HOT IN RUN UNDERHOOD ELECTRICAL CENTER #1 TCC FUSE BLK WIRE BLK/PNK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAM POSITION SENSOR IN CAMSHAFT POSITION SENSOR (RIGHT SIDE OF ENGINE) CRANK POSITION SENSOR (LOWER REAR OF ENGINE) CRUISE CONTROL MODULE CRUISE FUSE CRUISE ON IN DK BLU WIRE DK GRN/WHT WIRE ECM BAT FUSE ECM/IGN FUSE F/INJ FUSE FUEL PUMP PRIMING CONN FUEL PUMP RELAY (RIGHT SIDE OF ENGINE COMPT FWD OF STRUT TOWER) FUEL PUMP SWITCH/OIL PRESSURE SENSOR SW (FRONT CENTER OF ENGINE NEAR OIL FILTER) FUEL TANK UNIT (TOP OF FUEL TANK) GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START HOT IN RUN, BULB TEST, OR START FUSE BLOCK: I/P FUSE 39 IGNITION AMPLIFIER AND SWITCHING MODULE IGNITION COIL ASSEMBLY (RIGHT REAR OF ENGINE COMPT) INJ 1 INJ 3 INJ 2 INJ 4 INJ 6 INJ 5 KNOCK SENSOR (LOWER RIGHT REAR OF ENGINE BLOCK) KNOCK SENSOR IN CRANK POS SENSOR IN LOW RESOLUTION LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OF MAG BRACKET) ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (LEFT REAR OF ENGINE, RIGHT TOP OF TRANSAXLE) PLUGS SPARK PNK IGNITION WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POSITION SENSOR PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE SECOND GEAR START SWITCH (BEHIND LEFT SIDE OF I/P) SHIFT SOL A SHIFT SOL B SPARK PLUGS TACHOMETER TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOL TCC/BRAKE SWITCH (LEFT SIDE OF I/P) TRANS TEMP SWITCH TRANSAXLE CONVERTER CLUTCH UNDER- HOOD ELECT CENTER UNDERHOOD ELECTRICAL CENTER #1 ELEC/IGN FUSE WHT WIRE YEL WIRE YEL/BLK WIRE

389 229 THEFT DETERRENT MODULE A/C COMP RLY 335 473 FAN CTRL #1 RELAY FAN CTRL #2 RELAY A/C COMPRESSOR CONTROLS A/C HEAD PRESSURE SWITCH A/C REQUEST INPUT AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT REF INPUT FUEL CTRL REF IN GROUND SPARK REF IN MAF SENSOR IN COOLING FAN REQUEST CRUISE CONTROL MODULE CRUISE ENGAGED SIGNAL DATA LINK CONNECTOR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EGR 5 VOLT REF FUSED IGN FEED ENG EMIS FUSE F/INJN FUSE FUEL INJECTORS FUEL PUMP RELAY CTRL FUSED BATTERY FEED IAT GROUND GRY WIRE HOT IN RUN HOT IN RUN, BULB TEST OR START IDLE AIR CONTROL MOTOR (TOP LEFT SIDE OF ENGINE) IGN LINEAR EGR CTRL FUSED IGN FEED LINEAR EXHAUST GAS RECIRCULATION (EGR) VALVE (UPPER RIGHT SIDE OF ENGINE) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MASS AIR FLOW SENSOR (TOP LEFT SIDE OF ENGINE) ORG/ WIRE PNK WIRE PNK/BLK WIRE PPL 400 401 VEHICLE SPEED SENSOR (RIGHT REAR OF ENGINE) PPL PPL/WHT WIRE RED/BLK WIRE SERIAL DATA LINE SHIFT A SOL SHIFT B SOL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC ENABLE SOL TCC FUSE TCC PWM SOL TCC/PWM SOLENOID CTRL CRUISE DISABLE UNDERHOOD ELECTRICAL CENTER #1 ECM/ING FUSE UNDERHOOD ELECTRICAL CENTER 1 VSS INPUT HI VSS INPUT LO WHT WIRE YEL WIRE YEL/BLK WIRE

413 412 PPL BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN/WHT WIRE ECM BAT FUSE ENG EMIS FUSE ENGINE COOLANT TEMP SENSOR (TOP LEFT SIDE OF ENGINE) EVAPORATIVE EMISSIONS CANISTER PURGE SOLENOID (TOP OF ENGINE ON INTAKE PLENUM) FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY (RIGHT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FUEL PUMP/ OIL PRESSURE SENSOR SWITCH (RIGHT FRONT OF ENGINE NEAR OIL FILTER) FUEL TANK UNIT (TOP OF FUEL TANK) FUSE 39 FUSE BLOCK GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START INDICATOR INSTRUMENT CLUSTER "SERVICE ENGINE SOON" INTAKE AIR TEMP INPUT INTAKE AIR TEMP SENSOR (LEFT FRONT OF ENGINE COMPARTMENT) KNOCK SENSOR (REAR RIGHT SIDE OF ENGINE) LT BLU/BLK WIRE LT GRN WIRE ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (LEFT REAR OF ENGINE, RIGHT TOP OF TRANSAXLE) PNK WIRE PPL PPL 1669 1668 PPL/WHT WIRE RED WIRE RED/BLK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC BRAKE SWITCH INPUT TCC SOL. CTRL TCC/BRAKE SWITCH (BRAKE PEDAL SUPPORT) THROTTLE POSITION SENSOR (MOUNTED TO SFI UNIT) TRANS RANGE PARITY INPUT TRANS RANGE INPUT C TRANSAXLE SOL B CTRL TRANSAXLE SOL A CTRL TRANSMISSION TEMP SENSOR (AUTOMATIC TRANSAXLE) UNDERHOOD ELECTRICAL CENTER 1 WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 PPL BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE BUFFER/ AMPLIFIER BYPASS SWITCH CAMSHAFT POSITION SENSOR (LOWER RIGHT SIDE OF ENGINE, ABOVE LOWER PULLEY) CATALYST CRANKSHAFT SENSOR (LOWER RIGHT SIDE OF ENGINE) ELECTRONIC IGNITION (EI) MODULE (TOP RIGHT FRONT OF ENGINE) ENG EMIS FUSE HALL EFFECT SENSOR HEATED OXYGEN HOT IN RUN HOT IN RUN, BULB TEST OR START IGNITION COILS LT BLU/BLK WIRE LT BLU/WHT WIRE PNK WIRE PPL PPL/WHT WIRE RED/BLK WIRE SENSOR GROUND SPARK PLUGS SWS/ AMPLIFIER TACH TACHOMETER (INSTRUMENT CLUSTER) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD ELECTRICAL CENTER #1 ELEK IGN FUSE WHT WIRE WHT/BLK WIRE YEL WIRE