Mercedes-Benz S-class W140 facelift (1994-1999) hot at all times Wiring diagrams

4/3 BLU WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE FUSE 3 FUSE 9 GRN WIRE HOT AT ALL TIMES HOT IN RUN OR START LEFT FRONT DOOR CLOSING ASSIST MICROSWITCH LEFT REAR DOOR CLOSING ASSIST MICROSWITCH NCA WIRE PNEUMATIC CONTROL MODULE REAR FUSE BOX RED WIRE RED/YEL WIRE RIGHT FRONT DOOR CLOSING ASSIST MICROSWITCH RIGHT REAR DOOR CLOSING ASSIST MICROSWITCH SUPPLY PUMP, CLOSING ASSIST YEL WIRE YEL/WHT 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

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

+12 V 31 1 2 3 4 5 6 7 8 9 10 11 12 13 LED R LED G LED R IR +12 V 31 20 DATA LINK CONNECTOR (DTC READOUT) (RIGHT SIDE OF ENG COMPT) A/C SYSTEM INTERIOR LIGHTS SYSTEM BLK WIRE BLK/GRN/VIO WIRE BLK/PNK WIRE BLK/RED/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN-L CAN-H CENTER CONSOLE CENTRAL LOCKING/ ANTI-THEFT SWITCH CL 30 COMPUTER DATA LINES SYSTEM CONVENIENCE CONTROL MODULE (RIGHT SIDE OF LUGGAGE COMPT) DF HD TK REVERSE 31 FUSE 11 FUSE 15 FUSE 18 FUSE 2 FUSE 20 FUSE 3 FUSE BOX GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN RUN OR START IR 30 LED G IR DAS CONTROL MODULE IR DIAG LED G LED R LEFT FRONT DOOR IR RECEIVER LEFT FRONT DOOR LOCK SWITCH LEFT FRONT DOOR SWITCH LEFT REAR DOOR SWITCH LEFT SBE CONTROL MODULE (COUPE) NCA WIRE PSE CONTROL MODULE REAR FUSE BOX RED WIRE RED/GRN WIRE RED/WHT WIRE REMOTE CONTROL LOCKING CONTROL MODULE REVERSE RIGHT FRONT DOOR IR RECEIVER RIGHT FRONT DOOR SWITCH RIGHT REAR DOOR SWITCH RIGHT REAR SEAT RTR A/C DOME RHR TK 15 TRANSMISSION RANGE RECOGNITION SWITCH TRANSPONDER COIL TRUNK LID IR RECEIVER TRUNK LID LOCK SWITCH TRUNK LID MICROSWITCH TRUNK RELEASE SYSTEM WHT WIRE WHT/GRN WIRE YEL WIRE YEL/VIO WIRE

BLK WIRE BLK/BLU WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/GRY WIRE CENTER CONSOLE CENTER CONSOLE REAR POWER WINDOWS CONVENIENCE CONTROL UNIT DATA LINK CONNECTOR DN TO LIMIT DN TO LIMIT UP DN UP TO LIMIT DN TO LIMIT UP TO LIMIT UP DN UP TO LIMIT FRONT CENTER CONSOLE LEFT FRONT POWER WINDOW SWITCH FRONT CENTER CONSOLE LEFT REAR POWER WINDOW SWITCH FRONT CENTER CONSOLE RIGHT REAR POWER WINDOW SWITCH FUSE 11 FUSE 5 FUSE 6 FUSE BOX FUSE 35 GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ACC, RUN, START LEFT FRONT DOOR SWITCH LEFT FRONT POWER WINDOW MOTOR LEFT REAR POWER WINDOW MOTOR LEFT REAR POWER WINDOW SWITCH PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/GRY WIRE PNK/VIO WIRE PNK/WHT WIRE PNK/YEL WIRE REAR FUSE BOX RED/GRN WIRE RED/WHT WIRE RED/WHT/YEL WIRE RED/YEL WIRE RIGHT FRONT DOOR SWITCH RIGHT FRONT POWER WINDOW MOTOR RIGHT FRONT POWER WINDOW SWITCH RIGHT REAR POWER WINDOW MOTOR RIGHT REAR POWER WINDOW SWITCH SAFETY SWITCH UP DN UP DN TO LIMIT UP TO LIMIT WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT WIRE

1995-99 1996-99 4 1 (1996-99) (1994-95) AM REAR WINDOW ANTENNA AMPLIFIER ANTENNA ASR/SPS CONTROL MODULE OR ESP/SPS/CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) BLK WIRE BLK/GRY WIRE BLK/GRY/RED WIRE BLK/YEL WIRE BLK/YEL/RED WIRE BLU WIRE BRN WIRE CENTER FILL TWEETER SPEAKER COMBINATION RELAY MODULE CTEL TRANSMITTER/ RECEIVER FM BUMPER ANTENNA AMPLIFIER FUSE 16 FUSE 22 FUSE BOX GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/RED/WHT WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT AXLE VSS SENSOR LEFT FRONT DOOR SPEAKER (COUPE) LEFT FRONT DOOR SPEAKER GROUP LEFT REAR DOOR SPEAKER (OTHER) LEFT REAR SPEAKER GROUP LEFT/RIGHT AUDIO POWER AMPLIFIER (LEFT SIDE OF TRUNK) NCA (OR WIRE NCA WIRE POWER ANTENNA SYSTEM RADIO REAR FUSE BOX HOT IN RUN OR START RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR SPEAKER (COUPE) RIGHT FRONT DOOR SPEAKER GROUP RIGHT REAR DOOR SPEAKER (OTHER) RIGHT REAR SPEAKER GROUP TERMINAL BLOCK W/ POWER ANTENNA W/O POWER ANTENNA WHT WIRE YEL/BLK WIRE

69/1 BLK/BRN WIRE BLK/GRN WIRE BLK/PNK WIRE BLK/VIO WIRE BLK/YEL WIRE BRN WIRE CENTER CONSOLE FUSE 15 FUSE 32 FUSE BOX GRN/BLK WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ACCY, RUN, OR START INTERIOR LIGHTS SWITCH LEFT REAR HEAD RESTRAINT MOTOR LEFT REAR HEAD RESTRAINT RAISE/LOWER SWITCH REAR FUSE BOX REAR HEAD RESTRAINT CONTROL MODULE (BELOW LEFT REAR SEAT) REAR HEAD RESTRAINT SWITCH (CONSOLE) RED/GRN WIRE RED/YEL WIRE RIGHT REAR HEAD RESTRAINT MOTOR RIGHT REAR HEAD RESTRAINT RAISE/LOWER SWITCH YEL/BLK WIRE

69/1 69/2 BACKREST ADJUST LIMIT SWITCH BACKREST ADJUST MOTOR BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/PNK WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BRN WIRE CENTER CONSOLE CONVENIENCE CONTROL UNIT (RIGHT SIDE OF TRUNK) CONVENIENCE RELAY (IN FUSE BOX) CUSHION ADJUST LIMIT SWITCH CUSHION ANGLE MOTOR FUSE 31 FUSE 32 FUSE BOX GRN WIRE GRY WIRE GRY/BLU WIRE HEAD RESTRAINT MOTOR HEAD RESTRAINT UP/DOWN HOT AT ALL TIMES INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM LEFT REAR DOOR PLUG CONNECTION LEFT REAR INDIVIDUAL SEAT MOTOR GROUP LEFT REAR SEAT ADJUSTMENT SWITCH PNK WIRE REAR FUSE BOX FUSE 15 REAR HEAD RESTRAINT CONTROL UNIT (BELOW REAR SEAT) REAR HEAD RESTRAINT SWITCH RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT REAR DOOR PLUG CONNECTION RIGHT REAR INDIVIDUAL SEAT MOTOR GROUP RIGHT REAR SEAT ADJUSTMENT SWITCH SEAT CUSHION ADJUST MOTOR SEAT CUSHION INCLINE BACKREST FWD/ BKWD TERMINAL VIO WIRE VIO/BLK WIRE VIO/BLU WIRE WHT WIRE YEL WIRE YEL/BRN WIRE YEL/VIO WIRE

2 11 9 18 19 17 16 8 10 13 20 12 PNK WIRE 69/2 BACKREST ADJUSTMENT BACKREST FWD/ BKWD BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/PNK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/BLK WIRE CENTER CONSOLE CONVENIENCE CONTROL UNIT (RIGHT SIDE OF TRUNK) CONVENIENCE RELAY (IN FUSE BOX) CUSHION ANGLE FUSE 31 FUSE BOX GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLU WIRE HEAD RESTRAINT UP/DOWN HOT AT ALL TIMES LEFT REAR DOOR PLUG CONNECTION LEFT REAR DOOR PLUG CONNECTOR LEFT REAR SEAT CUSHION ADJUSTMENT SWITCH LUGGAGE COMPARTMENT FUSE BOX FUSE 15 PNK WIRE PNK/BLK WIRE REAR BACKREST ADJUSTMENT REAR HEAD RESTRAINT REAR HEAD RESTRAINT CONTROL UNIT (BELOW REAR SEAT) REAR HEAD RESTRAINT SWITCH RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR DOOR PLUG CONNECTION RIGHT REAR DOOR PLUG CONNECTOR RIGHT REAR SEAT CUSHION ADJUSTMENT SWITCH TERMINAL VIO WIRE WHT WIRE YEL WIRE YEL/BLK 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