Audi A4 B5 facelift (1999-2001) combination processor Wiring diagrams

1 2 3 4 5 6 7 8 9 10 (NAVIGATION ONLY) ANTENNA AMPLIFIER ANTI-THEFT SYSTEM AUTO CHECK SYSTEM BLK WIRE BLK/RED WIRE BLU WIRE BLU/GRY WIRE BRN WIRE BRN/GRY WIRE COMBINATION PROCESSOR COMPUTER DATA LINES SYSTEM FUSE 37 FUSE 5 FUSE PANEL (ON LEFT END OF DASH) GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT CLUSTER LEFT FREQUENCY CROSSOVER LEFT FRONT SPEAKER LEFT FRONT WOOFER, MIDRANGE SPEAKER LEFT REAR MIDRANGE SPEAKER LEFT REAR WOOFER MULTIFUNCTION STEERING WHEEL CONTROL MODULE NAVIGATION CONTROL MODULE (IF EQUIPPED) NCA WIRE RADIO REAR WINDOW DEFOGGER SWITCH REAR WINDOW DEFOGGER/ WINDOW ANTENNA (W/ CONCERT RADIO) REAR WINDOW DEFOGGER/ WINDOW ANTENNA (W/ SYMPHONY RADIO) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL (OR WHT/YEL) WIRE RED/YEL WIRE RIGHT FRONT SPEAKER RIGHT FRONT WOOFER, MIDRANGE SPEAKER RIGHT REAR MIDRANGE SPEAKER RIGHT REAR WOOFER RIGHT REAR WOOFER/ AMPLIFIER TELEPHONE TRANSCEIVER TV ANTENNA AMPLIFIER 1 TV ANTENNA AMPLIFIER 2 TV ANTENNA AMPLIFIER 3 TV ANTENNA AMPLIFIER 4 VIO/GRY WIRE W/ AUTO CHECK SYSTEM W/ CONCERT RADIO W/ SYMPHONY RADIO WHT WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 (NAVIGATION ONLY) ANTENNA ANTI-THEFT SYSTEM AUTO CHECK SYSTEM BLK WIRE BLK/RED WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE COMBINATION PROCESSOR COMPUTER DATA LINES SYSTEM FUSE 37 FUSE 5 FUSE PANEL (ON LEFT END OF DASH) GRN WIRE GRN/BLU WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT CLUSTER LEFT FREQUENCY CROSSOVER LEFT FRONT SPEAKER LEFT FRONT WOOFER, MIDRANGE SPEAKER LEFT REAR MIDRANGE SPEAKER MULTIFUNCTION STEERING WHEEL CONTROL MODULE NAVIGATION CONTROL MODULE (IF EQUIPPED) NCA WIRE RADIO REAR WINDOW DEFOGGER SWITCH REAR WINDOW DEFOGGER/ WINDOW ANTENNA (W/ SYMPHONY RADIO) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL (OR WHT/YEL) WIRE RED/YEL WIRE RIGHT FREQUENCY CROSSOVER RIGHT FRONT SPEAKER RIGHT FRONT WOOFER, MIDRANGE SPEAKER RIGHT REAR MIDRANGE SPEAKER RIGHT REAR WOOFER/ AMPLIFIER TELEPHONE TRANSCEIVER TV ANTENNA AMPLIFIER 2 TV ANTENNA AMPLIFIER 3 TV ANTENNA AMPLIFIER 4 VIO/GRY WIRE W/ AUTO CHECK SYSTEM W/ SYMPHONY RADIO WHT WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 (NAVIGATION ONLY) ANTENNA AMPLIFIER ANTI-THEFT SYSTEM AUTO CHECK SYSTEM BLK WIRE BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE CD CHANGER UNIT COMBINATION PROCESSOR COMPUTER DATA LINES SYSTEM FUSE 37 FUSE 5 FUSE PANEL (ON LEFT END OF DASH) GRN WIRE GRN/BLU WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT CLUSTER LEFT FREQUENCY CROSSOVER TELEPHONE TRANSCEIVER LEFT FRONT MIDRANGE SPEAKER LEFT FRONT WOOFER LEFT REAR MIDRANGE, WOOFER SPEAKERS MULTIFUNCTION STEERING WHEEL CONTROL MODULE NAVIGATION CONTROL MODULE (IF EQUIPPED) NCA WIRE RADIO REAR WINDOW DEFOGGER SWITCH REAR WINDOW DEFOGGER/ WINDOW ANTENNA (W/ CONCERT RADIO) REAR WINDOW DEFOGGER/ WINDOW ANTENNA (W/ SYMPHONY RADIO) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL (OR WHT/YEL) WIRE RED/YEL WIRE RIGHT FRONT MIDRANGE SPEAKER RIGHT FRONT WOOFER RIGHT REAR WOOFER, MIDRANGE SPEAKERS TV ANTENNA AMPLIFIER 1 TV ANTENNA AMPLIFIER 2 TV ANTENNA AMPLIFIER 3 TV ANTENNA AMPLIFIER 4 VIO WIRE VIO/GRY WIRE W/ AUTO CHECK SYSTEM W/ CONCERT RADIO W/ SYMPHONY RADIO WHT WIRE WHT/BLU WIRE YEL WIRE

* - INFORMATION NOT AVAILABLE 8-WAY RELAY CARRIER ABS CONTROL MODULE ABS RETURN FLOW PUMP ABS RETURN FLOW PUMP RELAY ABS SOLENOID VALVE RELAY ABS/EDL HYDRAULIC UNIT (BELOW LEFT SIDE OF REAR SEAT) ANTI-SLIP CONTROL SWITCH BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/GRN WIRE BRN/RED WIRE COMBINATION PROCESSOR DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) FUSE 13 FUSE 53 FUSE 7 FUSE PANEL FWD ONLY GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/RED WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER LEFT FRONT ABS INLET VALVE LEFT FRONT ABS OUTLET VALVE LEFT FRONT ABS WHEEL SPEED SENSOR LEFT FRONT BRAKE PAD WEAR SENSOR LEFT FRONT TRACTION CONTROL OUTLET VALVE LEFT FRONT TRACTION CONTROL SWITCH-OVER VALVE LEFT REAR ABS INLET VALVE LEFT REAR ABS OUTLET VALVE LEFT REAR ABS WHEEL SPEED SENSOR MOTRONIC ENGINE CONTROL MODULE (NEAR BRAKE BOOSTER IN PROTECTIVE CASE) RED WIRE RED/BLK WIRE RED/BRN WIRE RED/YEL WIRE RIGHT FRONT ABS INLET VALVE RIGHT FRONT ABS OUTLET VALVE RIGHT FRONT ABS WHEEL SPEED SENSOR RIGHT FRONT BRAKE PAD WEAR SENSOR RIGHT FRONT TRACTION CONTROL OUTLET VALVE RIGHT FRONT TRACTION CONTROL SWITCH-OVER VALVE RIGHT REAR ABS INLET VALVE RIGHT REAR ABS OUTLET VALVE RIGHT REAR ABS WHEEL SPEED SENSOR TRACTION CONTROL IND TRANSMISSION CONTROL MODULE (UNDER CARPET, FORWARD OF PASSENGER'S SEAT) VIO/BLK WIRE W/ ANTI-SLIP CONTROL W/ ANTI-SLIP CONTROL OR QUATTRO W/ ANTI-SLIP CONTROL FWD ONLY W/ ANTI-SLIP CONTROL W/ ANTI-SLIP CONTROL WHT WIRE WHT/BLK WIRE WHT/BRN WIRE YEL WIRE YEL/BLU WIRE YEL/RED WIRE

13-WAY RELAY CARRIER (BEHIND LEFT SIDE OF DASH) 5 5 6 1 1 2 (AVANT) 6 2 (AVANT) AUTO CHECK SYSTEM (PART OF INSTRUMENT CLUSTER) AVANT BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BRAKE LIGHT SWITCH BRN WIRE COMBINATION PROCESSOR DAYTIME RUNNING LIGHTS SWITCH-ON RELAY EMERGENCY FLASHER SWITCH FUSE FUSE 2 FUSE FUSE FUSE PANEL (LEFT END OF DASH) FUSE GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HEAD HEAD PARK HIGH MOUNT BRAKE LIGHT HOT AT ALL TIMES HOT IN RUN OR START HOT W/ LOAD REDUCTION RELAY ENERGIZED HOT W/ LOAD REDUCTION RELAY ENERGIZED HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM (WITH TRAILER OPTION) INTERIOR LIGHTS SYSTEM LEFT FRONT PARK/TURN LIGHT LEFT SIDE TURN SIGNAL LIGHT LEFT TAILLAMP ASSEMBLY 4 6 INSTRUMENT CLUSTER (AVANT) LEFT TURN IND PARK TURN LICENSE PLATE LIGHTS LIGHT SWITCH MICRO CENTRAL ELECTRIC OFF PARK REAR LIGHT CONTROL MODULE (ON 13-WAY RELAY CARRIER) RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT PARK/TURN LIGHT RIGHT SIDE TURN SIGNAL LIGHT RIGHT TAILLAMP ASSEMBLY 3 6 (AVANT) RIGHT TURN IND TURN TAIL STOP TAIL STOP TURN TURN PARK TURN SIGNAL SWITCH VIO WIRE WHT WIRE YEL WIRE

13-WAY RELAY CARRIER (BEHIND LEFT SIDE OF DASH) 5 5 6 1 1 2 (AVANT) 6 2 (AVANT) AVANT BLK WIRE BLK/GRN WIRE BLU WIRE BRAKE LIGHT SWITCH BRN WIRE COMBINATION PROCESSOR DAYTIME RUNNING LIGHTS SWITCH-ON RELAY EMERGENCY FLASHER SWITCH FUSE FUSE 2 FUSE FUSE FUSE PANEL (LEFT END OF DASH) FUSE PANEL (LEFT END OF DASH) FUSE GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE GRY/YEL WIRE HEAD HEAD PARK HIGH MOUNT BRAKE LIGHT HOT AT ALL TIMES HOT W/ LOAD REDUCTION RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM (WITH TRAILER OPTION) LEFT FRONT PARK/TURN LIGHT LEFT RIGHT TURN IND TURN IND TURN LEFT SIDE TURN SIGNAL LIGHT LEFT TAILLAMP ASSEMBLY 4 6 (AVANT) LICENSE PLATE LIGHTS LIGHT SWITCH MICRO CENTRAL ELECTRIC OFF OFF PARK PARK RED WIRE RED/BLK WIRE RED/YEL WIRE RIGHT FRONT PARK/TURN LIGHT INSTRUMENT CLUSTER RIGHT SIDE TURN SIGNAL LIGHT RIGHT TAILLAMP ASSEMBLY 3 6 (AVANT) TAIL STOP TURN TURN PARK TURN SIGNAL SWITCH TURN TAIL STOP VIO WIRE VIO/BLU WIRE WHT WIRE YEL WIRE

5 5 6 1 1 2 (AVANT) 6 2 (AVANT) AUTO CHECK SYSTEM (PART OF INSTRUMENT CLUSTER) AVANT BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLU WIRE BRAKE LIGHT SWITCH BRN WIRE COMBINATION PROCESSOR EMERGENCY FLASHER SWITCH FUSE FUSE 2 FUSE FUSE FUSE PANEL (LEFT END OF DASH) FUSE GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HEAD HEAD PARK HIGH MOUNT BRAKE LIGHT HOT AT ALL TIMES HOT AT ALL TIMES MICRO CENTRAL ELECTRIC HOT IN RUN OR START HOT W/ LOAD REDUCTION RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM (WITH TRAILER OPTION) LEFT FRONT PARK/TURN LIGHT LEFT SIDE TURN SIGNAL LIGHT LEFT TAILLAMP ASSEMBLY 4 6 INSTRUMENT CLUSTER (AVANT) LEFT TURN IND PARK TURN LICENSE PLATE LIGHTS LIGHT SWITCH OFF OFF PARK REAR LIGHT CONTROL MODULE (ON 13-WAY RELAY CARRIER) RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT PARK/TURN LIGHT RIGHT SIDE TURN SIGNAL LIGHT RIGHT TAILLAMP ASSEMBLY 3 6 (AVANT) RIGHT TURN IND TURN TAIL STOP TAIL STOP TURN TURN PARK TURN SIGNAL SWITCH VIO WIRE WHT WIRE YEL WIRE

5 5 6 1 1 2 (AVANT) 6 2 (AVANT) AVANT BLK WIRE BLK/GRN WIRE BLU WIRE BRAKE LIGHT SWITCH BRN WIRE COMBINATION PROCESSOR EMERGENCY FLASHER SWITCH FUSE FUSE 2 FUSE FUSE FUSE PANEL (LEFT END OF DASH) FUSE GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE GRY/YEL WIRE HEAD HEAD PARK HIGH MOUNT BRAKE LIGHT HOT AT ALL TIMES HOT AT ALL TIMES MICRO CENTRAL ELECTRIC HOT W/ LOAD REDUCTION RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM (WITH TRAILER OPTION) LEFT FRONT PARK/TURN LIGHT LEFT RIGHT TURN IND TURN IND TURN LEFT SIDE TURN SIGNAL LIGHT LEFT TAILLAMP ASSEMBLY 4 6 (AVANT) LICENSE PLATE LIGHTS LIGHT SWITCH OFF OFF PARK PARK RED WIRE RED/BLK WIRE RED/YEL WIRE RIGHT FRONT PARK/TURN LIGHT INSTRUMENT CLUSTER RIGHT SIDE TURN SIGNAL LIGHT RIGHT TAILLAMP ASSEMBLY 3 6 (AVANT) TAIL STOP TURN TURN PARK TURN SIGNAL SWITCH TURN TAIL STOP VIO WIRE VIO/BLU WIRE WHT WIRE YEL WIRE

A/C CONTROL HEAD ANTI-SLIP CONTROL SWITCH ASHTRAY LIGHT BLK WIRE BLU WIRE BOARD COMPUTER FUNCTION SELECTOR SWITCH BRN WIRE CENTER I/P VENT ILLUM CIGARETTE LIGHTER LIGHT COMBINATION PROCESSOR CUP HOLDER ILLUM DIM INPUT DIM INPUT DIM INPUT DRIVER'S SEAT HEATER REGULATING SWITCH FOGLIGHT CONTROL MODULE FRONT FOG LIGHT SWITCH FRONT INTERIOR LIGHT ASSEMBLY GRN WIRE GRY WIRE HEAD OFF PARK HEAD PARK HOT AT ALL TIMES MICRO CENTRAL ELECTRIC INSTRUMENT CLUSTER INSTRUMENT PANEL LIGHT DIMMER SWITCH LEFT I/P VENT ILLUM LIGHT SWITCH LUGGAGE COMPARTMENT LIGHT (AVANT) MULTIFUNCTION STEERING WHEEL CONTROL MODULE OFF PASSENGER'S SEAT HEATER REGULATING SWITCH RADIO REAR FOG LIGHT SWITCH REAR INTERIOR LIGHT ASSEMBLY RED WIRE RIGHT I/P VENT ILLUM VIO WIRE W/ ASC WHT WIRE

AUTO CHECK SYSTEM BLK WIRE BLK/RED WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BOARD COMPUTER FUNCTION SELECTOR SWITCH BRN WIRE COMBINATION PROCESSOR COMPUTER DATA LINES SYSTEM FUSE 15 FUSE 31 FUSE 5 FUSE PANEL GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT CLUSTER M/T A/T NAVIGATION CONTROL MODULE NAVIGATION SYSTEM ANTENNA NCA WIRE RADIO RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE TELEPHONE TRANSCEIVER VIO/GRY WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE