Audi A4 B9 facelift (2019-2024) sound systems Wiring diagrams

2.0L TURBO 3.0L TURBO ABS IND LAMP AIR BAG IND LAMP BLK WIRE BLU WIRE BRAKE SYSTEM IND LAMP BRN WIRE CENTER COUPLING POINT IN ENGINE/MOTOR COMPARTMENT COMPUTER DATA LINES SYSTEM CRUISE CONTROL IND LAMP DISPLAY UNIT ELECTROMECHANICAL POWER STEERING IND LAMP ENGINE ELECTRONICS IND LAMP ENGINE/MOTOR CONTROL MODULE EXCEPT 3.0L TURBO FUEL GAUGE FUSE 11 FUSE 4 FUSE 9 FUSE PANEL C GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/RED WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL MODULE (REAR OF INSTRUMENT CLUSTER) LANE CHANGE ASSISTANCE IND LAMP LEFT TURN SIGNAL IND LAMP LEVEL 3 OIL PRESSURE SWITCH OIL PRESSURE SWITCH ORG/ WIRE ORG/BRN WIRE PARKING BRAKE IND LAMP PNK/WHT WIRE POWER DISTRIBUTION SYSTEM RED/GRY WIRE RED/YEL WIRE REDUCED OIL PRESSURE SWITCH RIGHT EMERGENCY FLASHER IND LAMP SOUND SYSTEMS VIO WIRE WHT WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD PROJECTION HEAD UP DISPLAY CONTROL MODULE

2.0L TURBO 3.0L TURBO ABS IND LAMP AIR BAG IND LAMP BRAKE SYSTEM IND LAMP BRN WIRE CENTER COUPLING POINT IN ENGINE/MOTOR COMPARTMENT COMPUTER DATA LINES SYSTEM CRUISE CONTROL IND LAMP DISPLAY UNIT ELECTROMECHANICAL POWER STEERING IND LAMP ENGINE ELECTRONICS IND LAMP ENGINE/MOTOR CONTROL MODULE EXCEPT 3.0L TURBO FUEL GAUGE FUSE 11 FUSE 4 FUSE 9 FUSE PANEL C GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/RED WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL MODULE (REAR OF INSTRUMENT CLUSTER) LANE CHANGE ASSISTANCE IND LAMP LEFT TURN SIGNAL IND LAMP LEVEL 3 OIL PRESSURE SWITCH OIL PRESSURE SWITCH ORG/BRN WIRE PARKING BRAKE IND LAMP PNK/WHT WIRE POWER DISTRIBUTION SYSTEM RED/GRY WIRE RED/YEL WIRE REDUCED OIL PRESSURE SWITCH RIGHT EMERGENCY FLASHER IND LAMP SOUND SYSTEMS VIO WIRE WHT WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD PROJECTION HEAD UP DISPLAY CONTROL MODULE

ANDROID OPERATING SYSTEM ANTENNA ANTENNA AMPLIFIER ANTENNA AMPLIFIER 2 BLK WIRE BLU WIRE BLU/GRN WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 10 FUSE 14 FUSE 2 FUSE 5 FUSE 7 FUSE PANEL 4 FUSE PANEL B FUSE PANEL C GRN WIRE GRN/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ TERMINAL 15 POWER SUPPLY RELAY ENERGIZED INFORMATION ELECTRONICS CONTROL MODULE 1 MOST DATA BUS CIRCUIT NAVIGATION SYSTEM NCA WIRE ORG/ WIRE ORG/BRN WIRE PNK WIRE RADIO ANTENNA 2 REAR VIEW CAMERA CIRCUIT RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 1 SOUND SYSTEMS USB USB CHARGING SOCKET 2 USB CONNECTION 1 USB DISTRIBUTOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO WIRE VIO/RED WIRE

BLK WIRE BLU WIRE BOTTOM COUPLING POINT ON LEFT A-PILLAR BRN WIRE BRN/BLU WIRE BRN/GRN WIRE CENTER SPEAKER 2 COMPUTER DATA LINES SYSTEM DIGITAL SOUND SYSTEM FUSE FRONT INFORMATION DISPLAY CONTROL HEAD FRONT ROOF MODULE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE HOT AT ALL TIMES INFORMATION ELECTRONICS CONTROL MODULE 1 INTERIOR MICROPHONE MICROPHONE UNIT IN FRONT ROOF MODULE LEFT EFFECTS SPEAKER LEFT FRONT DOOR COUPLING POINT LEFT FRONT MIDRANGE SPEAKER LEFT FRONT MIDRANGE SPEAKER 2 LEFT FRONT TREBLE SPEAKER MOST DATA BUS CIRCUIT N/A NAVIGATION SYSTEM (EMERGENCY CALL CIRCUIT) ORG/ WIRE ORG/BRN WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 2 RIGHT EFFECTS SPEAKER RIGHT FRONT MIDRANGE SPEAKER 2 SOUND SYSTEMS VIO/BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE

ANDROID OPERATING SYSTEM CONTROL MODULE ANTENNA ANTENNA AMPLIFIER ANTENNA AMPLIFIER 2 BLK WIRE BLU WIRE BLU/GRN WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 10 FUSE 14 FUSE 2 FUSE 5 FUSE 7 FUSE PANEL 4 FUSE PANEL B FUSE PANEL C GRN WIRE GRN/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ TERMINAL 15 POWER SUPPLY RELAY ENERGIZED INFORMATION ELECTRONICS CONTROL MODULE 1 MOST DATA BUS CIRCUIT NAVIGATION SYSTEM NCA WIRE ORG/ WIRE ORG/BRN WIRE PNK WIRE RADIO ANTENNA 2 RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 1 SOUND SYSTEMS USB USB CHARGING SOCKET 2 USB CONNECTION 1 USB DISTRIBUTOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO WIRE VIO/RED WIRE

BLK WIRE BLU WIRE BLU/WHT WIRE BOTTOM COUPLING POINT ON LEFT A-PILLAR BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/VIO WIRE CENTER SPEAKER COMPUTER DATA LINES SYSTEM FRONT INFORMATION DISPLAY CONTROL HEAD GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/RED WIRE INFORMATION ELECTRONICS CONTROL MODULE 1 LEFT FRONT BASS SPEAKER LEFT FRONT DOOR COUPLING POINT LEFT FRONT TREBLE SPEAKER LEFT REAR BASS SPEAKER LEFT REAR DOOR COUPLING POINT LEFT REAR TREBLE SPEAKER MOST DATA BUS CIRCUIT NAVIGATION SYSTEM (EMERGENCY CALL CIRCUIT) ORG/ WIRE ORG/BRN WIRE RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE SOUND SYSTEMS SUBWOOFER VIO/GRY WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE

BLK WIRE BLU WIRE BOTTOM COUPLING POINT ON LEFT A-PILLAR BRN WIRE BRN/BLU WIRE BRN/GRN WIRE CENTER SPEAKER 2 COMPUTER DATA LINES SYSTEM DIGITAL SOUND SYSTEM FUSE FRONT INFORMATION DISPLAY CONTROL HEAD FRONT ROOF MODULE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE HOT AT ALL TIMES INFORMATION ELECTRONICS CONTROL MODULE 1 INTERIOR MICROPHONE MICROPHONE UNIT IN FRONT ROOF MODULE LEFT EFFECTS SPEAKER LEFT FRONT DOOR COUPLING POINT LEFT FRONT MIDRANGE SPEAKER LEFT FRONT MIDRANGE SPEAKER 2 LEFT FRONT TREBLE SPEAKER MOST DATA BUS CIRCUIT N/A NAVIGATION SYSTEM (EMERGENCY CALL CIRCUIT) ORG/ WIRE ORG/BRN WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 2 RIGHT EFFECTS SPEAKER RIGHT FRONT MIDRANGE SPEAKER 2 SOUND SYSTEMS VIO/BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE

ANDROID OPERATING SYSTEM CONTROL MODULE ANTENNA ANTENNA AMPLIFIER ANTENNA AMPLIFIER 2 BLK WIRE BLU WIRE BLU/GRN WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 10 FUSE 14 FUSE 2 FUSE 5 FUSE 7 FUSE PANEL 4 FUSE PANEL B FUSE PANEL C GRN WIRE GRN/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ TERMINAL 15 POWER SUPPLY RELAY ENERGIZED INFORMATION ELECTRONICS CONTROL MODULE 1 MOST DATA BUS CIRCUIT NAVIGATION SYSTEM NCA WIRE ORG/ WIRE ORG/BRN WIRE PNK WIRE RADIO ANTENNA 2 RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 1 SOUND SYSTEMS USB USB CHARGING SOCKET 2 USB CONNECTION 1 USB DISTRIBUTOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO WIRE VIO/RED WIRE

BLK WIRE BLU WIRE BLU/WHT WIRE BOTTOM COUPLING POINT ON LEFT A-PILLAR BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/VIO WIRE CENTER SPEAKER COMPUTER DATA LINES SYSTEM FRONT INFORMATION DISPLAY CONTROL HEAD GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/RED WIRE INFORMATION ELECTRONICS CONTROL MODULE 1 LEFT FRONT BASS SPEAKER LEFT FRONT DOOR COUPLING POINT LEFT FRONT TREBLE SPEAKER LEFT REAR BASS SPEAKER LEFT REAR DOOR COUPLING POINT LEFT REAR TREBLE SPEAKER MOST DATA BUS CIRCUIT NAVIGATION SYSTEM (EMERGENCY CALL CIRCUIT) ORG/ WIRE ORG/BRN WIRE RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE SOUND SYSTEMS SUBWOOFER VIO/GRY WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE

ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/GRN WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS FUSE 1 FUSE 10 FUSE 5 FUSE 9 FUSE PANEL 2 FUSE PANEL 3 FUSE PANEL B GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HORNS SYSTEM HOT AT ALL TIMES NAVIGATION SYSTEM ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 1 SEATS SYSTEM SOUND SYSTEMS VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO/BLU WIRE VIO/RED WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE