Mercedes-Benz S-class W140 (1991-1998) nca Wiring diagrams

32/1 32/2 37/1 A/C SYSTEM ANTI-THEFT ALARM CONTROL UNIT (RIGHT SIDE OF TRUNK) BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/GRY/YEL WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER CONSOLE CF CONTROL UNIT (RIGHT SIDE OF TRUNK) CL TRUNK LID SWITCH FUSE 11 FUSE 25 FUSE 3 FUSE BOX GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN RUN OR START IGNITION/ STARTER SWITCH INTERIOR CL SWITCH LEFT FRONT DOOR LOCK SWITCH LEFT REAR DOOR SWITCH NCA WIRE OFF PSE CONTROL MODULE REAR FUSE BOX RED WIRE RED/GRN WIRE RHR RELEASE SWITCH RIGHT FRONT DOOR LOCK SWITCH RIGHT FRONT DOOR SWITCH RIGHT REAR DOOR SWITCH ROTARY TUMBLER/ TRUNK LID MICROSWITCH RUN WIRE STARTER LOCK-OUT/ BACKUP LAMP SWITCH TERMINAL TERMINAL BLOCK TEST CONNECTION FOR DIAGNOSIS (RIGHT SIDE OF ENGINE COMPT) TRUNK LID LOCK SWITCH TRUNK LID REMOTE CONTROL VALVE (1995) WHT WIRE WHT/GRN WIRE YEL WIRE

73/1 BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/GRY/RED WIRE BLK/VIO WIRE BLU WIRE BLU/GRN WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER CONSOLE COMBINATION RELAY (LEFT REAR CORNER OF ENGINE COMPT) FRONT SEAT HEATER CONTROL UNIT (UNDER LEFT SIDE OF REAR SEAT) FUSE 29 FUSE 34 FUSE 22 FUSE BOX GRY WIRE GRY/BLU WIRE HI LO HOT AT ALL TIMES HOT IN ACCY, RUN, OR START LEFT FRONT BACKREST HEATER LEFT FRONT SEAT HEATER SWITCH NCA WIRE OFF RED WIRE RED/YEL WIRE RED/YEL/WHT WIRE RIGHT FRONT BACKREST HEATER LEFT FRONT SEAT HEATER RIGHT FRONT SEAT HEATER RIGHT FRONT SEAT HEATER SWITCH VIO WIRE WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE

ANTI-THEFT ALARM CONTROL UNIT (RIGHT SIDE OF TRUNK) BLK WIRE BLK/GRN/VIO WIRE BLK/RED/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/PNK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/GRY/YEL WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CA SUPPLY PUMP CONVENIENCE CONTROL UNIT (RIGHT SIDE OF TRUNK) FUSE 2 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START IGNITION/ STARTER SWITCH INFRARED REMOTE CONTROL UNIT (RIGHT SIDE OF TRUNK) LEFT FRONT DOOR ACTUATOR LEFT FRONT DOOR CLOSING ASSIST MICROSWITCH LEFT FRONT DOOR IR RECEIVER LEFT FRONT DOOR LOCK SWITCH LEFT FRONT DOOR ROTARY TUMBLER MICROSWITCH LUGGAGE COMPARTMENT FUSE BOX FUSE 15 NCA WIRE OFF PSE CONTROL MODULE RED WIRE RED/WHT WIRE RIGHT FRONT DOOR CLOSING ASSIST MICROSWITCH RIGHT FRONT DOOR IR RECEIVER RIGHT FRONT DOOR LOCK SWITCH RIGHT FRONT DOOR ROTARY TUMBLER MICROSWITCH RIGHT REAR DOOR CLOSING ASSIST MICROSWITCH RIGHT REAR DOOR ROTARY TUMBLER MICROSWITCH ROTARY TUMBLER/ TRUNK LID MICROSWITCH RUN WIRE STARTER LOCK-OUT RELAY MODULE TERMINAL TEST CONNECTION FOR DIAGNOSIS (RIGHT SIDE OF ENGINE COMPT) TRUNK LID IR RECEIVER TRUNK LID LOCK SWITCH YEL WIRE YEL/VIO WIRE YEL/WHT WIRE

63/2 AUTOMATIC ANTENNA BLK WIRE BLU WIRE BRN WIRE FUSE 28 FUSE BOX HOT AT ALL TIMES NCA WIRE RADIO CONTROL MODULE RED/WHT WIRE TUNER/ AMPLIFIER

63/2 AUTOMATIC ANTENNA BLK WIRE BRN WIRE CTEL TRANSMITTER/ RECEIVER FUSE 28 FUSE BOX HOT AT ALL TIMES IN DASH CONTROLLER NCA WIRE ORG/ WIRE RED/WHT WIRE

47/1 AUDIO POWER AMPLIFIER AUTOMATIC ANTENNA BLK WIRE BLU WIRE BRN WIRE FUSE 16 FUSE BOX HOT AT ALL TIMES NCA WIRE RADIO RED/WHT WIRE RED/YEL WIRE

17/2 17/1 32/1 20/2 32/2 47 -1 47 -2 74/2 74/1 71/2 20/1 A/C SYSTEM BLOWER UNIT ABS/ASR HYDRAULIC UNIT ACCY AIRBAG INDICATOR ANTI- THEFT ALARM SYSTEM, INFRARED REMOTE CONTROL, REAR HEATED SEATS ANTI-THEFT ALARM SYSTEM, INFRARED REMOTE CONTROL, REAR HEAD RESTRAINTS BASE MODULE BATTERY BLK WIRE BLU WIRE BRN WIRE CANADA CENTRAL LOCKING, CLOSING ASSIST CONVENIENCE FEATURE DAYTIME RUNNING LAMPS ELECTROLYTIC CAPACITOR ETS/SPS CONTROL MODULE FRONT CIGAR LIGHTER FUEL PUMPS FUSE 11 FUSE 12 FUSE 15 FUSE 16 FUSE 16 FUSE 13 FUSE 14 FUSE 15 FUSE 17 FUSE 1 FUSE 2 FUSE 22 FUSE 3 FUSE 4 (RIGHT FRONT OF LUGGAGE COMPART- MENT) (NOT USED) FUSE 34 FUSE 35 FUSE 5 FUSE 2 FUSE 4 FUSE 5 FUSE 6 FUSE 7 FUSE 9 FUSE 10 FUSE 6 (LEFT REAR OF ENGINE COMPART- MENT) FUSE BOX GRN WIRE GRN/BLK WIRE GRY WIRE HEATED REAR WINDOW HEATED SEATS HEATED SEATS, DEFOGGER, RELAY MODULE, SEAT BELT EXTENDER IGNITION/ STARTER SWITCH INFRARED CENTRAL LOCKING MAXI FUSE BOX NCA WIRE OFF PNK WIRE PNK/ PNK/ PNK/ TO FUSE BOX PNK/ WIRE PREGLOW TIME-LIMIT RELAY RADIO SOUND SYSTEM: TUNER, AMPLIFIER REAR CIGAR LIGHTER REAR CLIMATE CONTROL REAR FUSE BOX REAR ILLUMINATED VANITY MIRROR POWER WINDOWS REAR WINDOW SUNSHIELD, CONVENIENCE SYSTEM SRS CONTROL UNIT RED WIRE RUN WIRE SEATBELT WARNING MODULE SLIDING/ POP-UP ROOF STARTER LOCK-OUT/ BACK-UP LAMP RELAY SELECTOR LEVER POSITION RECOGNITION FUSE 3 TELE- PHONE TERMINAL TERMINAL BLOCK TERMINAL BLOCK X/4 TO COMBINATION SWITCH (DIAGRAM 2 OF 2) TO EXTERIOR LAMP SWITCH TO FUSE BOX, (DIAGRAM 2 OF 2) TO TERMINAL BLOCK (DIAGRAM 2 OF 2) VIO WIRE WHT WIRE WIPER MOTOR AUXILIARY FAN RELAY WIPER RELAY, WASHER PUMP, COMBINATION RELAY, REAR WINDOW DEFOGGER SWITCH YEL WIRE YEL/BLK WIRE

12/2 14/1 14/3 12/1 14/2 22/3 22/1 22/2 24/3 28/3 28/2 (NOT USED) PNK PNK WIRE 29/2 28/1 3/1 7/3 36/2 36/1 31/2 37/2 37/1 5/1 5/2 9/1 63/2 78/2 65/1 78/1 68/2 (NOT USED) 69/1 69/2 82/1 82/2 AIR CONDITIONING, AUXILIARY COOLANT PUMP CONTROL RELAY MODULE ALTERNATOR AUTOMATIC CLIMATE CONTROL, A/C COMPRESSOR, BASE MODULE KICKDOWN SWITCH BLK WIRE BLU WIRE BRIDGE CANADA COMBINATION SWITCH CONVENIENCE RELAY DAYTIME RUNNING LAMPS DAYTIME RUNNING LAMPS DAYTIME RUNNING LAMPS EXTERIOR LAMP SWITCH FLASH TO PASS FLASH- TO- PASS HI LO FOG LAMP SWITCH FROM FUSE 15 (DIAGRAM 1 OF 2) FROM IGNITION/ STARTER SWITCH (DIAGRAM 1 OF 2) FROM IGNITION/STARTER SWITCH (DIAGRAM 1 OF 2) FROM MAXI-FUSE BOX (DIAGRAM 1 OF 2) FROM TERMINAL BLOCK (DIAGRAM 1 OF 2) FRONT FOG LAMPS ATA CONTROL UNIT REAR FOG LAMPS FUSE 11 FUSE 13 FUSE 12 FUSE 14 FUSE 20 FUSE 19 FUSE 23 FUSE 21 FUSE 24 FUSE 26 FUSE 10 FUSE 27 FUSE 28 FUSE 38 FUSE 37 FUSE 33 FUSE 29 FUSE 30 FUSE 31 FUSE 32 FUSE 36 FUSE 40 FUSE 41 FUSE 8 FUSE 7 FUSE 9 FUSE BOX (LEFT REAR OF ENGINE COMPARTMENT) FUSE BOX (LEFT REAR OF ENGINE FUSE 25 COMPARTMENT) FUSE BOX FUSE 18 FUSE 17 GRN WIRE GRN/WHT WIRE GRY WIRE HEAD HEAD LH IGNITION COIL INSTRUMENT CLUSTER LEFT FRONT POWER SEAT ELECTRONIC ANTENNA FRONT HEATED SEATS LEFT HIGH BEAM HEADLAMP, HIGH BEAM INDICATOR LEFT LOW BEAM HEADLAMP LEFT/RIGHT SEAT MEMORY, DRIVER MEMORY STEERING COLUMN ADJUST LH HEAD NCA WIRE NSE OFF PARK PNK PNK WIRE PNK/ ENGINE CONTROLS BASE MODULE WIRE PNK/GRN/BLK WIRE PNK/YEL/BLK WIRE REAR POWER SEAT, TRUNK LAMP, RIGHT REAR HEAD RESTRAINT RED WIRE RED/WHT WIRE RH OFF PARK RIGHT FRONT POWER SEAT RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP STANDING STANDING OFF RH PARK STANDING RH STARTER TERMINAL VIO WIRE WARNING BUZZER, EXTERIOR LAMP FAILURE MONITORING UNIT WHT WIRE YEL WIRE

BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/GRY/RED WIRE BLK/VIO WIRE BLU WIRE BLU/GRN WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER CONSOLE COMBINATION RELAY (LEFT REAR CORNER OF ENGINE COMPT) FUSE 12 FUSE 22 FUSE BOX GRN WIRE GRY WIRE GRY/BLU WIRE HI LO HOT AT ALL TIMES HOT IN ACCY, RUN, OR START LEFT REAR BACKREST HEATER LEFT REAR DOOR PLUG CONNECTION LEFT REAR SEAT HEATER LEFT REAR SEAT HEATER SWITCH NCA WIRE OFF REAR FUSE BOX FUSE 2 REAR SEAT HEATER CONTROL UNIT (BELOW REAR SEAT) RED WIRE RED/YEL WIRE RED/YEL/WHT WIRE RIGHT REAR BACKREST HEATER RIGHT REAR SEAT HEATER RIGHT REAR DOOR PLUG CONNECTION RIGHT REAR SEAT HEATER SWITCH VIO WIRE WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE

BRN WIRE CENTER CONSOLE FUSE BOX GRN WIRE GRY/BLU WIRE HOT IN RUN OR START FUSE 35 NCA WIRE REAR WINDOW SUN SHADE MOTOR REAR WINDOW SUN SHADE SWITCH RED/BLK WIRE WHT WIRE