Audi A4 B9 (2015-2020) red/blu Wiring diagrams

A/C CLUTCH (IF EQUIPPED) A/C COMPRESSOR REGULATOR VALVE AIR QUALITY SENSOR AUTOMATIC DIMMING BLK/GRN WIRE BLU/WHT WIRE BOTTOM COUPLING POINT ON LEFT A-PILLAR BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM COUPLING POINT ON ROOF ENGINE COOLANT LEVEL SENSOR FRESH AIR BLOWER FRESH AIR BLOWER CONTROL MODULE FUSE 1 FUSE 10 FUSE 8 FUSE PANEL 3 FUSE PANEL 4 FUSE PANEL 5 FUSE PANEL B GRN WIRE GROUND DISTRIBUTION SYSTEM GRY/BRN WIRE GRY/RED WIRE HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT W/ TERMINAL 15 POWER SUPPLY RELAY ENERGIZED HUMIDITY SENSOR IN FRESH AIR INTAKE DUCT INTERIOR LIGHT RECOGNITION SENSOR ORG/BRN WIRE OUTSIDE AIR TEMPERATURE SENSOR REAR VIEW MIRROR) RED/BLU WIRE RED/GRY WIRE RELAY & FUSE CARRIER 1 VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO/RED WIRE VIO/WHT WIRE W/ HIGH BEAM ASSIST W/O HIGH BEAM ASSIST WHT WIRE WHT/YEL WIRE YEL WIRE YEL/VIO WIRE

BLK/GRN WIRE BLK/GRY WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM COOLANT RECIRCULATION PUMP COOLANT SHUT-OFF VALVE ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE SENSOR ENGINE COOLANT TEMPERATURE SENSOR ON RADIATOR OUTLET FUSE 13 FUSE 14 FUSE 2 FUSE 3 FUSE 8 FUSE PANEL 1 FUSE PANEL A FUSE PANEL B GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES LEFT COUPLING POINT IN ENGINE COMPARTMENT N/A PNK/WHT WIRE RADIATOR FAN RADIATOR FAN 2 RADIATOR FAN CONTROL MODULE RADIATOR FAN CONTROL MODULE 2 RADIATOR FAN FUSE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RELAY & FUSE CARRIER 1 SUPPRESSOR VIO/WHT WIRE W/ HOT CLIMATES W/ TRAILER HITCH W/O TRAILER HITCH W/ LOW FAN OUTPUT 2.0L CYMC 2.0L DBPA WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/VIO WIRE

AIR QUALITY SENSOR BLK/BRN WIRE BLU/RED WIRE BLU/WHT WIRE BOTTOM COUPLING POINT ON LEFT A-PILLAR BRN WIRE BRN/BLK WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DISPLAY UNIT EVAPORATOR VENT TEMPERATURE SENSOR FRESH AIR BLOWER FRESH AIR BLOWER CONTROL MODULE FUSE 1 FUSE 8 FUSE PANEL 4 FUSE PANEL 5 FUSE PANEL B GRN WIRE GRN/YEL WIRE GRY WIRE HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT W/ TERMINAL 15 POWER SUPPLY RELAY ENERGIZED HUMIDITY SENSOR IN FRESH AIR INTAKE DUCT INSTRUMENT CLUSTER CONTROL MODULE INSTRUMENT PANEL VENT MOTOR LEFT FOOTWELL VENT TEMPERATURE SENSOR LEFT FRONT UPPER BODY VENT TEMPERATURE SENSOR ORG/BRN WIRE RED/BLU WIRE RELAY & FUSE CARRIER 1 RIGHT FOOTWELL VENT TEMPERATURE SENSOR SUNLIGHT PHOTO SENSOR VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BRN WIRE YEL WIRE YEL/GRN WIRE

BLK/GRN WIRE BLK/GRY WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM COOLANT RECIRCULATION PUMP COOLANT SHUT-OFF VALVE ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE SENSOR ENGINE COOLANT TEMPERATURE SENSOR ON RADIATOR OUTLET FUSE 13 FUSE 14 FUSE 2 FUSE 3 FUSE 8 FUSE PANEL 1 FUSE PANEL A FUSE PANEL B GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES LEFT COUPLING POINT IN ENGINE COMPARTMENT N/A PNK/WHT WIRE RADIATOR FAN RADIATOR FAN 2 RADIATOR FAN CONTROL MODULE RADIATOR FAN CONTROL MODULE 2 RADIATOR FAN FUSE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RELAY & FUSE CARRIER 1 SUPPRESSOR VIO/WHT WIRE W/ HOT CLIMATES W/ TRAILER HITCH W/O TRAILER HITCH W/ LOW FAN OUTPUT 2.0L CYMC 2.0L DBPA WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/VIO WIRE

BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COUPLING POINT IN RIGHT REAR SEAT FRONT PASSENGER SEAT BACKREST COUPLING POINT GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/RED WIRE LEFT REAR SEAT HEATING BUTTON ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RIGHT FRONT SEAT COUPLING STATION RIGHT FRONT SEAT HEATED BACKREST RIGHT FRONT SEAT HEATING ELEMENT, RIGHT FRONT SEAT TEMPERATURE SENSOR RIGHT REAR BACKREST HEATING ELEMENT RIGHT REAR BENCH SEAT HEATING ELEMENT/ RIGHT REAR HEATED SEAT TEMPERATURE SENSOR RIGHT REAR SEAT COUPLING STATION RIGHT REAR SEAT HEATING BUTTON VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO/WHT WIRE WHT/BRN WIRE WHT/VIO WIRE WHT/YEL WIRE

BLK/WHT WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE DRIVER SEAT BACKREST COUPLING POINT FUSE 1 FUSE PANEL 3 FUSE PANEL 4 FUSE PANEL B GRN WIRE GRN/BRN WIRE HOT AT ALL TIMES HOT W/ TERMINAL 15 POWER SUPPLY RELAY ENERGIZED LEFT FRONT SEAT BACKREST FAN 1 LEFT FRONT SEAT COUPLING STATION LEFT FRONT SEAT CUSHION FAN 1 LEFT FRONT SEAT HEATED BACKREST LEFT FRONT SEAT HEATING ELEMENT, LEFT FRONT SEAT TEMPERATURE SENSOR RED WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RELAY & FUSE CARRIER 1 VIO/WHT WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER SIDE SEAT VENTILATION SWITCH FRONT A/C DISPLAY CONTROL HEAD FRONT PASSENGER SEAT BACKREST COUPLING POINT FRONT PASSENGER SIDE SEAT VENTILATION SWITCH 2 GRN WIRE GRN/BRN WIRE LEFT SEAT HEATING BUTTON ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RIGHT FRONT SEAT BACKREST FAN 1 RIGHT FRONT SEAT COUPLING STATION RIGHT FRONT SEAT CUSHION FAN 1 RIGHT FRONT SEAT HEATED BACKREST RIGHT FRONT SEAT HEATING ELEMENT, RIGHT FRONT SEAT TEMPERATURE SENSOR RIGHT SEAT HEATING BUTTON VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO/WHT WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLU/BRN WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FRONT ROOF MODULE FRONT SUNROOF MOTOR POSITION SENSOR FRONT SUNROOF MOTOR POSITION SENSOR 2 FUSE 4 FUSE 8 FUSE PANEL 2 FUSE PANEL 3 FUSE PANEL B GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES ORG/BRN WIRE POWER SUNROOF CONTROL MODULE REAR ROOF FUNCTION BUTTON REAR SUNROOF CONTROL MODULE REAR SUNROOF MOTOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RELAY & FUSE CARRIER 1 ROOF SHADE BUTTON 1 SHADE MOTOR SUNROOF BUTTON SUNROOF MOTOR SUNROOF SHADE MOTOR SUNROOF SHADE MOTOR POSITION SENSOR SUNROOF SHADE MOTOR POSITION SENSOR 2 VIO WIRE VIO/RED WIRE WAGON WHT WIRE

BLK WIRE BLU WIRE BLU/GRN WIRE BLU/WHT WIRE BLU/YEL WIRE BOTTOM COUPLING POINT ON LEFT A-PILLAR BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER SPEAKER CENTER SPEAKER 2 DIGITAL SOUND SYSTEM CONTROL MODULE FUSE 2 FUSE PANEL 5 FUSE PANEL F GRN WIRE GRN/BLK WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/WHT WIRE HOT AT ALL TIMES LEFT EFFECTS SPEAKER LEFT FRONT BASS SPEAKER LEFT FRONT DOOR COUPLING POINT LEFT FRONT MIDRANGE SPEAKER LEFT FRONT MIDRANGE SPEAKER 2 LEFT FRONT TREBLE SPEAKER LEFT FRONT TREBLE SPEAKER 2 LEFT REAR BASS SPEAKER LEFT REAR DOOR COUPLING POINT LEFT REAR TREBLE SPEAKER MOST DATA BUS CIRCUIT RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 2 RIGHT EFFECTS SPEAKER RIGHT FRONT BASS SPEAKER RIGHT FRONT DOOR COUPLING POINT RIGHT FRONT MIDRANGE SPEAKER RIGHT FRONT MIDRANGE SPEAKER 2 RIGHT FRONT TREBLE SPEAKER RIGHT FRONT TREBLE SPEAKER +2 RIGHT REAR BASS SPEAKER RIGHT REAR DOOR COUPLING POINT RIGHT REAR TREBLE SPEAKER SEDAN SUBWOOFER (OPTIONAL EQUIPMENT) VIO WIRE VIO/BLU WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE

BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 5 FUSE PANEL 3 FUSE PANEL F GRY WIRE HOT AT ALL TIMES LEFT FRONT SEAT COUPLING STATION LEFT REAR INFORMATION DISPLAY CONTROL HEAD CONTROL MODULE MULTIMEDIA DISPLAY UNIT 3 MULTIMEDIA DISPLAY UNIT 3 BRACKET MULTIMEDIA DISPLAY UNIT 4 MULTIMEDIA DISPLAY UNIT 4 BRACKET NCA WIRE PNK WIRE RED WIRE RED/BLU WIRE RELAY & FUSE CARRIER 2 RIGHT FRONT SEAT COUPLING STATION RIGHT REAR INFORMATION DISPLAY CONTROL HEAD CONTROL MODULE VIO WIRE WHT WIRE YEL WIRE