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

BRN WIRE FRONT POWER DISTRIBUTION BOX (REAR LEFT SIDE OF ENGINE COMPARTMENT) FUSE GRN/BLK WIRE HOT IN RUN AND START JET HEATER THERMOSWITCH (FRONT LEFT SIDE OF ENGINE COMPT.) LEFT WASHER JET HEATER (ON UNDERSIDE OF HOOD) NCA WIRE RIGHT WASHER JET HEATER (ON UNDERSIDE OF HOOD)

BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/VIO WIRE BRN/YEL WIRE GENERAL MODULE (REAR POWER DISTRIBUTION BOX) GRY/BRN WIRE HOT AT ALL TIMES INT (REAR) SINGLE WIPE (REAR) INTENSIVE NCA WIRE OFF REAR POWER DISTRIBUTION BOX (BELOW LEFT SIDE OF REAR SEAT) FUSE REAR WINDOW OPENING SWITCH REAR WINDOW WASHER PUMP (RIGHT SIDE OF LUGGAGE COMPARTMENT) REAR WINDOW WIPER MOTOR REAR WIPER/WASHER INTERVAL CONTROL MODULE (RIGHT SIDE OF LUGGAGE COMPARTMENT) RED WIRE RED/WHT WIRE RELAY MODULE (REAR POWER DISTRIBUTION BOX) SINGLE WIPE OFF INT NORM FAST VIO WIRE VIO/WHT WIRE WHT WIRE WIPER/WASHER SWITCH

AUTOMATIC TRANSMISSION RANGE SWITCH (FRONT OF GEARSHIFT LEVER) B+ JUNCTION POINT BATTERY VOLTAGE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE LIGHT SWITCH (SUPPORT BRACKET) BRAKE PEDAL POSITION BRN WIRE BRN/BLK WIRE BRN/ORG WIRE BRN/VIO WIRE BRN/WHT WIRE FRONT POWER DISTRIBUTION BOX (REAR LEFT SIDE OF ENGINE COMPT) FUSE GEAR RANGE GRN/RED WIRE GROUND HOT AT ALL TIMES HOT IN ACCY, RUN AND START HOT IN RUN AND START INSTRUMENT CLUSTER SYSTEM NCA WIRE RED WIRE SHIFT LOCK SOLENOID CONTROL GEAR RANGE SHIFT LOCK SOLENOID GROUND SHIFT-LOCK (FRONT OF GEARSHIFT SELECTOR) TRANSMISSION CONTROL MODULE (E-BOX) VIO WIRE VIO/YEL WIRE

ABBF- ABF- AUSF BLU/BLK WIRE BLU/VIO WIRE BLU/VIO/YEL WIRE BLU/WHT WIRE BRN (OR WIRE BRN WIRE BRN/BLK WIRE BRN/ORG WIRE CHECK CONTROL MODULE (FRONT POWER DIST BOX) CONTACT RINGS DATA LINK CONNECTOR (NEAR E-BOX, LEFT) DRIVER'S AIRBAG GAS GENERATOR DRIVER'S SEAT BELT SWITCH (IN SEAT BELT BUCKLE) GKBF GKF HOT AT ALL TIMES HOT IN ACCY, RUN AND START IGNITION SWITCH OFF INSTRUMENT CLUSTER AIR BAG INDICATOR NCA WIRE PASSENGER'S AIRBAG GAS GENERATOR PASSENGER'S SEAT BELT SWITCH (IN SEAT BELT BUCKLE) REAR POWER DISTRIBUTION BOX (BEHIND LEFT SIDE OF REAR SEAT) FUSE RUN WIRE SBE SEAT OCCUPANCY DETECTOR (LATE PROD. 1994, ALL 1995) (UNDER RIGHT FRONT SEAT) TXD (IN REAR HARNESS, BEHIND LEFT REAR SEAT) VIO WIRE VIO/ BLU WIRE VIO/BLU WIRE VIO/WHT WIRE WHT/ VIO WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

1991 ONLY AUTOMATIC TRANSMISSION RANGE SWITCH BAND SOLENOID BLK WIRE BLK/WHT/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE CHECK CONTROL MODULE COMPUTER DATA LINES SYSTEM ELECTRONIC TRANSMISSION ENGINE SPEED SENSOR ENGINE CONTROLS SYSTEM FRONT POWER DISTRIBUTION BOX FUSE GRN WIRE GRN/RED WIRE GROUND GRY WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES B+ JUNCTION POINT HOT IN ACCY, RUN AND START HOT IN RUN AND START HYDRAULIC PRESSURE REGULATOR INSTRUMENT CLUSTER NCA WIRE OIL TEMPERATURE SENSOR ORG/ WIRE PROGRAM SWITCH RED WIRE RED/BLU WIRE SHIFT LOCK SOLENOID SOLENOID VALVE 1 SOLENOID VALVE 2 TORQUE CONVERTER CLUTCH SOL VALVE TRANSMISSION CONTROL MODULE (EGS) TRANSMISSION KICKDOWN SWITCH TRANSMISSION VALVE UNIT TRANSPARENT VIO WIRE VIO/YEL WIRE WHT/BLK WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE

ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CLR DATA LINK CONNECTOR ENGINE CONTROLS SYSTEM FRONT POWER DISTRIBUTION BOX FUSE GRN WIRE GRN/BLK WIRE GRN/BLU/YEL WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES B+ JUNCTION POINT HOT IN ACCY, RUN AND START HOT IN RUN AND START INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM KICK DOWN SWITCH NCA WIRE OIL TEMPERATURE SENSOR ORG/ WIRE PRESSURE REGULATOR 1 PRESSURE REGULATOR 2 PRESSURE REGULATOR 3 PRESSURE REGULATOR 4 PRESSURE REGULATOR 5 PROGRAM SWITCH RED WIRE RED/BLU WIRE SHIFT LOCK SOLENOID SOLENOID VALVE 1 SOLENOID VALVE 2 SOLENOID VALVE 3 SPEED SENSOR SHAFT SPEED SENSOR TURBINE TRANSMISSION CONTROL MODULE (AGS) TRANSMISSION RANGE SWITCH TRANSMISSION VALVE UNIT VIO WIRE WHT WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE YEL/WHT WIRE

3 11 25 WIPER MTR SPEED SIG DATA LINE 4 5 6 22 STND WIPER INT WIPER WASH SIGNL WIPERS RUN BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/VIO/YEL WIRE BLK/WHT WIRE BLK/WHT/YEL WIRE BRN WIRE BRN/GRN/YEL WIRE BRN/VIO WIRE FRONT POWER DISTRIBUTION BOX (REAR LEFT SIDE OF ENGINE COMPARTMENT) FUSE FUSE GENERAL MODULE (REAR POWER DISTRIBUTION BOX) GRN WIRE HOT IN ACCY, RUN AND START HOT IN ACCY, RUN AND START FUSE INSTRUMENT CLUSTER NCA WIRE PARK REAR POWER DISTRIBUTION BOX (BELOW LEFT SIDE OF REAR SEAT) RED WIRE RED/WHT WIRE RELAY MODULE (REAR POWER DISTRIBUTION BOX) RUN WIRE SINGLE OFF INTER NORMAL FAST VEHICLE SPEED SIGNAL VIO/BLK WIRE VIO/YEL WIRE WASH WASHER PUMP (WASHER FLUID RESERVOIR) WIPER MOTOR WIPER RELAY (REAR POWER DISTRIBUTION BOX) WIPER/WASHER SWITCH YEL WIRE

20 15 DATA LINK CONNECTOR (PARTIAL) (NEAR E-BOX) AUXILIARY RELAY BOX (LEFT SIDE OF ENGINE COMPT.) AUXILIARY THROTTLE POSITION MOTOR (LEFT FRONT SIDE OF ENGINE COMPT.) AUXILIARY THROTTLE POSITION SENSOR BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE BRN WIRE BRN/ORG WIRE BRN/VIO WIRE ENGINE CONTROL MODULE (DME) (IN E-BOX) FUSE GRN WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START NCA WIRE RED WIRE RED/GRY WIRE RED/GRY/YEL WIRE SLIP CONTROL MODULE (ABS/ASC) (IN E-BOX) WHT/VIO WIRE YEL WIRE

"CHECK ENGINE" IND CTRL #1 #2 #3 #4 #5 #6 #7 B+ JUNCTION POINT (BEHIND RIGHT FRONT SHOCK TOWER, IN ELECTRONICS BOX) BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU 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 CARBON CANISTER (BEHIND LEFT FOG LIGHT) MASS AIR FLOW SENSOR COM- RESSOR CONTROL RELAY ECM RELAY SIG IGN GND ELECTRONIC THROTTLE CONTROL CIRCUIT ENGINE CONTROL MODULE (BEHIND RIGHT FRONT SHOCK TOWER, IN ELECTRONICS BOX) ENGINE SPEED IN FUEL CONSUM IN VEHICLE SPEED OUT FUEL INJ #5 FUEL INJ #8 FUEL INJ #3 GND FUEL INJ #2 EVAP EMISS SIG FUEL INJECTORS #8 GRN WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES IGNITION COILS (TOP RIGHT SIDE OF ENGINE, ABOVE RESPECTIVE CYLINDERS) INSTRUMENT CLUSTER MAF SENS GND (HLM) IGN MONITOR CRANKSHAFT SIG (KWG) CAMSHAFT SIG (NWG) NCA WIRE ORG/ WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE SHIELDED WIRES SLIP CONTROL MODULE SPARK PLUG #1 SPARK PLUG #2 SPARK PLUG #3 SPARK PLUG #4 THROTTLE ANGLE VIO WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/ORG WIRE ELECTRONICS BOX FAN ENGINE COOLANT TEMPERATURE SENSOR (RIGHT REAR SIDE OF ENGINE) ENGINE INTAKE AIR TEMPERATURE SENSOR (TOP FRONT OF ENGINE COMPT.) FRONT POWER DISTRIBUTION BOX FUSE GRN WIRE GRN/VIO WIRE IGNITION COILS (TOP LEFT SIDE OF ENGINE, ABOVE RESPECTIVE CYLINDERS) NCA WIRE OIL PRESSURE INDICATOR OIL PRESSURE SWITCH (LEFT FRONT OF ENGINE) ORG/ WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE SHIELD SHIELDED WIRES SPARK PLUG #5 SPARK PLUG #6 SPARK PLUG #7 SPARK PLUG #8 TEMPERATURE SWITCH (IN ELEC- TRONICS BOX) THROTTLE POSITION SENSOR (TOP FRONT OF ENGINE COMPT.) VIO WIRE WHT WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE YEL/WHT WIRE