BMW 5 series E34 (1988-1996) nca Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 GROUND 1995 VFTC A/C SWITCH ALTERNATOR STARTER AUXILIARY FAN SIGNAL GROUND BATTERY BATTERY BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/RED WIRE BRN/YEL WIRE CHARGING SYSTEM CIRCULATION SWITCH DEFOG SWITCH FRONT POWER DISTRIBUTION FUSE 20 BOX (1994) (1995) FUSE 25 FUSE 29 FUSE 9 GRN/BLU/YEL WIRE GRN/BRN WIRE GRN/BRN/YEL WIRE GRN/RED WIRE GROUND GROUND GROUND GRY WIRE GRY/BLK WIRE HEATER TEMP-RIGHT HEATER TEMP-LEFT OUTSIDE TEMP EVAPORATOR TEMP HOT AT ALL TIMES HOT IN RUN OR START ILLUMINATION VOLTAGE FOR FUNC LIGHTS INDEPENDENT VENTILATION VEHICLE SPEED INSTRUMENT CLUSTER INTEGRATED CLIMATE REGULATION CONTROL MODULE (ABOVE CENTER CONSOLE) LEFT HEAT EXCHANGER TEMPERATURE SENSOR (RIGHT SIDE OF LEFT FOOTWELL) NCA WIRE RED/BLK WIRE RED/GRN WIRE RED/YEL WIRE RIGHT HEAT EXCHANGER TEMPERATURE SENSOR (RIGHT SIDE OF PLENUM) STARTING SYSTEM SWITCHING UNIT VEHICLE SPEED VIO/GRY WIRE VOLTAGE WATER VALVE ACT IGNITION WATER VALVE ACT-RIGHT WATER VALVE ASSEMBLY WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

BATTERY BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/WHT WIRE BLOWER MOTOR BLOWER POTENTIOMETER BLOWER RELAY (IN POWER DISTRIBUTION BOX) BLOWER RESISTORS BLOWER SWITCH BLU WIRE BRN WIRE BRN/BLU WIRE BRN/YEL WIRE CONTROL PANEL ENGINE CONTROL MODULE (DME) (IN E-BOX) 1995 VFTC FRONT POWER DISTRIBUTION BOX FUSE 19 FUSE 27 GRN WIRE GRN/BLU/YEL WIRE GRN/BRN WIRE GRN/BRN/YEL WIRE GRN/GRY WIRE GRN/RED WIRE HI ME HOT AT ALL TIMES IGNITION SWITCH INTERIOR TEMP SENSOR LEFT ROTARY TEMP SWITCH RIGHT ROTARY TEMP SWITCH MAX NCA WIRE OFF ORG/ WIRE POWER DISTRIBUTION RED WIRE RED/BLK WIRE RED/GRN WIRE RED/YEL WIRE RUN WIRE SENSOR FAN THERMAL LIMITER VIO/GRY WIRE W/ PARK VENTILATION W/O PARK VENTILATION WATER VALVE SWITCH YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

1995 VFTC 530, 540 A/C COMPRESSOR AUXILIARY FAN MOTOR AUXILIARY WATER PUMP AUXILIARY WATER PUMP RELAY (IN FRONT POWER DISTRIBUTION BOX) BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/GRY/YEL WIRE BLK/RED/YEL WIRE BLK/WHT WIRE BLK/WHT/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN (BLU/GRN) WIRE BRN WIRE BRN/YEL WIRE COMPARTMENT) COMPRESSOR CONTROL COMPRESSOR CONTROL RELAY (IN POWER DISTRIBUTION BOX) COMPUTER DATA LINES SYSTEM FRESH AIR FLAP MOTOR (BELOW RIGHT SIDE OF DASH) GRN WIRE GRN/BLU/YEL WIRE GRN/BRN WIRE GRY WIRE HIGH SPEED RELAY (IN LEFT AUXILIARY RELAY BOX) INTEGRATED CLIMATE REGULATION CONTROL MODULE (ABOVE CENTER CONSOLE) LEFT FOOTWELL) NCA WIRE NORMAL SPEED RELAY (IN POWER DISTRIBUTION BOX) ON-BOARD COMPUTER (CENTER OF DASH) PARK HEATING/ VENTILATION RELAY BOX PRESSURE SWITCH (FRONT RIGHT SIDE OF ENGINE REAR DEFOGGER SYSTEM RECIRCULATION FLAP MOTOR (RIGHT OF STEERING COLUMN) RED WIRE RED/BLK WIRE RED/BLU/YEL WIRE RED/GRN WIRE RED/YEL WIRE SENSOR FOR ACTIVATION AUX WATER PUMP REAR DEFOGGER ACT TEMPER- ATURE SWITCH (RIGHT TOP OF RADIATOR) VIO/GRN WIRE WHT WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/RED WIRE

ABS PUMP MOTOR RELAY (RIGHT "A" PILLAR, BEHIND RIGHT FOOTWELL) B+ JUNCTION POINT (IN E-BOX) BATT VOLT L FNT INLET VLV VLV RLY/PUMP MTR RLY BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO/YEL WIRE BLU WIRE BLU/RED WIRE BRAKE FLUID WARN LP BRAKE LT SIG PLUNGER VLV BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRN/YEL WIRE BRN/GRY WIRE BRN/RED WIRE BRN/VIO WIRE BRN/YEL WIRE EML-SIG VOLT SIG ENG SPD SIG ENGINE CONTROL MODULE RELAY (IN E-BOX) ENGINE CONTROLS SYSTEM FRONT POWER DISTRIBUTION BOX (REAR LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRN/BLU/YEL WIRE GRY/BLK/YEL WIRE GRY/RED WIRE HOT AT ALL TIMES FUSE LEFT FRONT ABS SPEED SENSOR LEFT REAR ABS SPEED SENSOR NCA WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/GRY/YEL WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT ABS SPEED SENSOR RIGHT REAR ABS SPEED SENSOR RT FNT WHEEL SPD SIG THROT CTRL POT VOLT ASC PASSIVE BUTTON VOLT SIG RT REAR INLET VLV VOLT SIG SLIP CONTROL MODULE (ABS/ASC) (REAR RIGHT SIDE OF ENGINE COMPARTMENT) STARTING/CHARGING SYSTEM THROT CTRL POT SIG TRANSMISSION CONTROL MODULE (IN E-BOX) TXD DIAG DATA LINK VALVE RELAY (LEFT "A" PILLAR, BEHIND LEFT FOOTWELL) VOLT SUPPLY L REAR OUTLET VLV AUX THROT CTRL MTR GND L FNT INLET VLV GND WHT WIRE WHT/BLK OR YEL/VIO WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE YEL/WHT WIRE

ABS HYDRAULIC UNIT (LEFT SIDE OF ENGINE COMPARTMENT) ABS IND. ASC IND ASC SWITCH AUXILIARY THROTTLE MOTOR (NEAR THROTTLE BODY) AUXILIARY THROTTLE POSITION SENSOR (TOP FRONT OF ENGINE COMPARTMENT) BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/RED WIRE BLK/VIO/YEL WIRE BLU WIRE BLU/RED WIRE BLU/VIO/YEL WIRE BRAKE LIGHT SWITCH (ON BRAKE PEDAL) BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN/YEL WIRE BRN/GRY WIRE BRN/ORG OR BLK/GRN WIRE BRN/RED WIRE CARBON CANISTER (BEHIND LEFT FRONT FOG LIGHT) DATA LINK CONNECTOR (NEAR E-BOX, LEFT) ENGINE CONTROL MODULE (DME) (IN E-BOX) FRONT POWER DISTRIBUTION BOX (REAR LEFT SIDE OF ENGINE COMPARTMENT) FUSE GRN WIRE GRN/BLU/YEL WIRE GRN/RED WIRE GROUND GRY/BLK WIRE GRY/BLK/YEL WIRE GRY/RED WIRE HOT IN ACCY, RUN, OR START HOT IN RUN AND START INSTRUMENT CLUSTER INTAKE VALVE LEFT FOOTWELL) LEFT FRONT INLET VALVE LEFT FRONT OUTLET VALVE LEFT REAR INLET VALVE LEFT REAR OUTLET VALVE NCA WIRE PARK BRAKE SIG IGN TIMING SIG PARK BRAKE SWITCH (BELOW CENTER OF CONSOLE) PLUNGER VALVE PUMP MOTOR RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT INLET VALVE RIGHT FRONT OUTLET VALVE RIGHT REAR INLET VALVE RIGHT REAR OUTLET VALVE SIG LINE SLIP CONTROL MODULE (ABS/ASC) (REAR RIGHT SIDE OF ENGINE COMPARTMENT) THROT ANGLE SIG THROTTLE POSITION SENSOR (TOP FRONT OF ENGINE COMPARTMENT) TRANS INTERVENTION VIO WIRE WHT/BLK OR YEL/VIO WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/VIO WIRE YEL/WHT WIRE

AIR CONDITIONING SYSTEM INTERIOR LIGHTS SYSTEM ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM INSTRUMENT CLUSTER SYSTEM COMPUTER DATA LINES SYSTEM BLK/BLU WIRE BLK/GRN WIRE BLK/RED/YEL WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/WHT/YEL WIRE BLU/BRN/YEL WIRE BLU/RED/YEL WIRE BRN WIRE BRN/ORG WIRE BRN/VIO WIRE CHECK CTRL RESET LAC LINE DIAG PWR IN ENGINE CONTROLS SYSTEM FRONT POWER DISTRIBUTION BOX (REAR LEFT SIDE OF ENGINE COMPARTMENT) GRN WIRE GRN/RED WIRE GRY/RED WIRE HORN RLY CTRL DRIVE AWAY PROTECT SIG REMOTE CTRL RESERVE TANK CONTACT HOT AT ALL TIMES FUSE HOT IN ACCY, RUN AND START FUSE HOT IN RUN AND START FUSE INDEPENDENT VENT CTRL INJ SIG FUEL GA INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER SYSTEM COMPUTER DATA LINES SYSTEM NCA WIRE ON-BOARD COMPUTER (CENTER OF DASH) ON-BOARD COMPUTER HORN RELAY ON-BOARD COMPUTER TEMP SENSOR (UNDER LEFT FRONT BUMPER) ORG/ WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/GRY/YEL WIRE RED/YEL WIRE STARTING/CHARGING SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM TELEPHONE INTERFACE (BELOW FRONT OF CONSOLE VIO WIRE VIO/GRN/YEL WIRE VIO/WHT/YEL WIRE VIO/YEL WIRE WARNING SYSTEM WARNING SYSTEM WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/RED/WHT WIRE

AUTOMATIC TRANSMISSION RANGE SWITCH BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE LIGHT BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/ORG WIRE CHECK CONTROL MODULE CLUTCH SWITCH (CLUTCH PEDAL SUPPORT BRACKET) CRUISE CONTROL CRUISE CONTROL ACTUATOR (FRONT LEFT SIDE OF ENGINE COMP.) CRUISE CONTROL MODULE (LEFT FRONT OF I/P) DECELERATE/ SET FRONT POWER DISTRIBUTION BOX (REAR LEFT SIDE OF ENGINE COMP.) GRN/RED WIRE HOT IN ACC RUN AND START HOT IN RUN AND START INSTRUMENT CLUSTER NCA WIRE NORMAL OFF RESUME SET ACCELERATE/ SWITCH SWITCH (ON BRAKE PEDAL) TRANSMISSION SYSTEM VIO/YEL WIRE W/ EGS W/O EGS YEL/VIO WIRE YEL/WHT WIRE

ANTENNA AMPLIFIER (IN UPPER LEFT "C" PILLAR) ANTI-THEFT CONTROL MODULE (BELOW LEFT SIDE OF REAR SEAT) BLK WIRE BLU/WHT WIRE BRN WIRE BRN/YEL WIRE DIVERSITY (IN UPPER LEFT "C" PILLAR) HIFI AMPLIFIER HOT AT ALL TIMES FUSE INTEGRATED CLIMATE REGULATION CONTROL NCA WIRE ORG/ WIRE RADIO REAR DEFOGGER I REAR DEFOGGER RELAY (IN REAR POWER DISTRIBUTION BOX) REAR DEFOGGER/ ANTENNA REAR POWER DISTRIBUTION BOX (BELOW LEFT SIDE OF REAR SEAT) RED/BRN WIRE STARTING/CHARGING SYSTEM SUPPRESSION FILTER (IN UPPER RIGHT "C" PILLAR) W/ 3- ANTENNA- DIVERSITY W/O 3- ANTENNA- DIVERSITY W/O 3-ANTENNA- DIVERSITY W/ 3-ANTENNA- DIVERSITY WHT WIRE

1995 VFTC BATTERY BRN (OR BRN/ORG) WIRE BRN WIRE E-BOX FAN (REAR RIGHT SIDE OF ENGINE COMPARTMENT) FRONT POWER DISTRIBUTION BOX (REAR LEFT SIDE OF ENGINE COMPARTMENT) FUEL PUMP RELAY (IN E-BOX) GRN WIRE GRN/VIO WIRE HOT IN START AND RUN FUSE INSTRUMENT CLUSTER OIL WARNING IND NCA WIRE OIL PRESSURE SWITCH (FRONT OF ENGINE ON COOLANT INLET) RED WIRE TEMPERATURE SWITCH (TOP REAR OF ENGINE ON COOLANT INLET)

#4 #3 B+ JUNCTION POINT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAMSHAFT ACTUATOR (FRONT OF ENGINE) CYL 1 IGN COIL CYL 2 IGN COIL CYL 3 IGN COIL CYLINDER 1 CYLINDER 2 CYLINDER 3 CYLINDER 4 CYLINDER 5 CYLINDER 6 E-BOX ENGINE CONTROL MODULE (DME) (REAR RIGHT SIDE OF ENGINE COMPT IN E-BOX) ENGINE CONTROL MODULE RELAY EVAP CTRL EVAPORATIVE EMISSION VALVE (LEFT SIDE OF ENGINE COMPT) FRONT POWER DISTRIBU- TION BOX FUEL INJECTOR VALVES FUEL PUMP RELAY FUSE 23 GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRY WIRE GRY/YEL WIRE HFAM METER GND CRNKSHFT SENS CAMSHFT SENS HOT AT ALL TIMES HOT AT ALL TIMES #6 IDLE SPEED CONTROL VALVE (FRONT OF ENGINE) IGNITION COILS (TOP RIGHT SIDE OF ENGINE) IGNITION SWITCH INJ 3 INJ 2 INJ 1 GND NCA WIRE OFF RED WIRE RED/WHT WIRE RED/YEL WIRE RESISTOR (240 ) (TOP CENTER OF ENGINE) RUN WIRE SLIP CONTROL MODULE, ASC SWITCH SWITCHED BATT IGN GND START (15) IGN TIMING THRTL VLV POS W/ A/T WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE