Buick Regal VI (2017-2020) computer data lines system Wiring diagrams

1-BK 2-BK AM/FM BATT POS VOLT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN WIRE COAX COMPUTER DATA LINES SYSTEM FUSE 20 GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/YEL WIRE HATCHBACK HATCHBACK COAX HI SPD GMLAN HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT RADIO ANTENNA AMPLIFIER MUTE RADIO ANTENNA AMPLIFIER REAR END SPOILER ANTENNA REAR WINDOW ANTENNA RED/BLU WIRE RED/BRN WIRE RED/VIO WIRE RESISTOR SIG 1 RIGHT RADIO ANTENNA AMPLIFIER RIGHT STEERING WHEEL CONTROLS SWITCH (ONE COLOR GRAPHIC) SEEK DOWN SEEK UP SERIAL DATA (-) (1) SOURCE STEERING WHEEL AIR BAG COIL STEERING WHEEL) VIO WIRE VIO/YEL WIRE VOICE VOLUME DOWN VOLUME UP WAGON WHT WIRE WHT/RED WIRE YEL WIRE

1-BK 2-BK AM/FM BATT POS VOLT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN WIRE COAX COMPUTER DATA LINES SYSTEM FUSE 20 GRN WIRE GRN/GRY WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/YEL WIRE HATCHBACK HI SPD GMLAN HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT RADIO ANTENNA AMPLIFIER MUTE RADIO ANTENNA AMPLIFIER REAR END SPOILER ANTENNA REAR WINDOW ANTENNA RED/BLU WIRE RED/BRN WIRE RED/VIO WIRE RESISTOR SIG 1 RIGHT RADIO ANTENNA AMPLIFIER RIGHT STEERING WHEEL CONTROLS SWITCH (ONE COLOR GRAPHIC) SEEK DOWN SEEK UP SERIAL DATA (-) (1) SOURCE STEERING WHEEL AIR BAG COIL STEERING WHEEL) VIO WIRE VIO/YEL WIRE VOICE VOLUME DOWN VOLUME UP WAGON WAGON COAX WHT WIRE WHT/RED WIRE YEL WIRE

AUDIO AMPLIFIER BATT POS VOLT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/YEL WIRE COAX COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE ETHERNET BUS 6 (-) FC SPEAKER (-) LOW REF FC SPEAKER CTRL (+) GMLAN SERIAL DATA 2 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/YEL WIRE HATCHBACK LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MICROPHONE 1 LOW REF MICROPHONE 1 SIG MICROPHONE 2 LOW REF MICROPHONE 2 SIG MICROPHONE 3 LOW REF MICROPHONE 3 SIG MICROPHONE 4 RTN MICROPHONE 4 SIG NCA WIRE PASSENGER DOOR HARNESS) REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RED/BLU WIRE RED/BRN WIRE RED/VIO WIRE REPLICATED REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RIGHT FRONT DOOR SPEAKER RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RIGHT FRONT TWEETER SPEAKER RIGHT REAR DOOR SPEAKER RIGHT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SIG SPEAKER (-) LOW REF SPEAKER CTRL (+) VIO WIRE VIO/BLU WIRE WAGON WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

1-BK 1-YE AM/FM AM/FM/DAB AUDIO LOW REF AUDIO SIG + BATT POS VOLT BK COAX AM/FM ANTENNA SIG BK LVDS INFOTAINMENT DISPLAY SIG BK USB USB SERIAL DATA BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN WIRE BRN/BLU WIRE BRN/WHT WIRE CAMERA SIG 2 COAX COAX CU XM/HD COMM SIG COMPUTER DATA LINES SYSTEM DET SIG DIM SIG DISPLAY RESET SIG DOWN SIG DOWN UP FUSE 20 FUSE 35 FUSE 42 GMLAN SERIAL DATA GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HATCHBACK HI SPD GMLAN HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED INFORTAINMENT REGULATED CTRL INSTRUMENT PANEL FUSE BLOCK LCD DIMMING SIG LEFT RADIO ANTENNA AMPLIFIER LF SPEAKER (-) CTRL 1 LH RR SPEAKER CTRL (+) LH RR SPEAKER SIG (-) LT AUD SIG 2 LVDS NAVIGATION SYSTEM NCA WIRE ON SIG RADIO RADIO ANTENNA AMPLIFIER RADIO BACKLIGHT CTRL RADIO BACKLIGHT LOW REF REAR END SPOILER ANTENNA REAR ROOF ANTENNA REAR VIEW CAMERA CIRCUIT REAR WINDOW ANTENNA RED/BRN WIRE RED/VIO WIRE REQUEST SIG RESISTOR SIG 1 RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RH RR SPEAKER (+) CTRL RH RR SPEAKER SIG (-) RT AUD SIG 2 SCREEN 2 SERIAL DATA (-) (1) STEERING WHEEL) SWITCH SIG 2 USB VIO WIRE VIO/WHT WIRE VOICE LOW VOICE SIG INFORTAINMENT REGULATED CTRL WAGON WHT WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

1-BN 2-BN AUDIO SIG + BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLU WIRE BRN/WHT WIRE CELL PHONE SIG CELLULAR PHONE MICROPHONE COAX COMPUTER DATA LINES SYSTEM GPS/CELL SIG GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE GRY/YEL WIRE LOW REF LVDS MICROPHONE SIG MUTE NCA WIRE RED WIRE RED/VIO WIRE RIGHT STEERING WHEEL CONTROLS SWITCH (ONE COLOR GRAPHIC) SEEK DOWN SEEK UP SER DATA (+) 9 SOURCE STEERING WHEEL AIR BAG COIL TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB VIO WIRE VIO/WHT WIRE VOICE VOICE LOW REF VOICE SIGNAL VOLUME DOWN VOLUME UP WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

2.0L TURBO 3.6L AUXILIARY AUDIO COMMON SIG AUXILIARY AUDIO SCREEN 2 AUXILIARY DETECTION SIG BAT POS VOLT BATT POSITIVE VOLT BATTERY FUSE BLOCK BK COAX BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLU WIRE BRN/VIO WIRE BRN/WHT WIRE CELLULAR VOICE LO REF CELLULAR VOICE SIG COAX COMPUTER DATA LINES SYSTEM COOLING FAN/ DC DC CONVERTER 2 FUSE CTRL CU COAX XM DIMMING FUSE 10 FUSE 16 FUSE 20 FUSE 31 FUSE 35 FUSE 39 FUSE 42 FUSE 5 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/YEL WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED INDICATOR INFOTAINMENT REGULATED CTRL INSTRUMENT PANEL FUSE BLOCK LADDER SIG 1 LEFT LEFT AUXILIARY AUDIO SIG 2 LEFT STEERING WHEEL CONTROLS SWITCH LF LOW LEVEL AUDIO REF LF LOW LEVEL AUDIO SIG LOGIC RIGHT STEERING WHEEL CONTROLS SWITCH LR LOW LEVEL AUDIO REF LR LOW LEVEL AUDIO SIG + MUTE NCA WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (REAR OF CENTER FLOOR CONSOLE) RADIO RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE RESISTOR RF LOW LEVEL AUDIO REF RF LOW LEVEL AUDIO SIG RIGHT RIGHT AUXILIARY AUDIO SIG 2 RR LOW LEVEL AUDIO REF RR LOW LEVEL AUDIO SIG + SEATS SYSTEM SEEK DOWN SEEK UP SEL SERIAL DATA BUS 10 LOW SPD GMLAN SERIAL DATA 2 STEERING WHEEL AIR BAG COIL STEERING WHEEL) UNDERHOOD FUSE BLOCK UP DOWN VIO WIRE VOL (-) VOLT 2 W/ HEAD UP DISPLAY W/O HEAD-UP DISPLAY WH COAX WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1-BK 1-YE 2-BK AM/FM AM/FM/DAB BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN WIRE BRN/BLU WIRE BRN/VIO WIRE BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/YEL WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BRN WIRE HATCHBACK HATCHBACK/ WAGON HI SPD GMLAN LEFT QUARTER WINDOW ANTENNA LEFT RADIO ANTENNA AMPLIFIER MUTE REAR END SPOILER ANTENNA REAR WINDOW ANTENNA RED/BLU WIRE RED/BRN WIRE RED/VIO WIRE RESISTOR SIG 1 RIGHT RADIO ANTENNA AMPLIFIER RIGHT STEERING WHEEL CONTROLS SWITCH (ONE COLOR GRAPHIC) SEEK DOWN SERIAL DATA (-) (1) SOURCE VOICE STEERING WHEEL AIR BAG COIL STEERING WHEEL) VIO WIRE VOLUME DOWN SEEK UP VOLUME UP WAGON WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

AUXILIARY AUDIO INPUT BATT POS VOLT BK USB BK USB USB SERIAL DATA BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BN GPS/CELL BUS 10 BUS 5 CAMERA SIG 2 CELLULAR MICROPHONE SIG CELLULAR PHONE MICROPHONE COAX COAX BK GPS COAX VT CELL 1 COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM DATA DATA 2 (+) DISPLAY GMLAN SERIAL GMLAN SERIAL DATA (+) 9 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HUMAN MACHINE INTERFACE CONTROL MODULE INFO DISPLAY MODULE INFO REGULATED CTRL LOGIC LOW REF LVDS LVDS BU USB SERIAL DATA MICROPHONE (-) LOW REF MOST CONTROL MOST CTRL MOST SERIAL DATA (+) NAVIGATION SYSTEM NCA WIRE RADIO RADIO CONTROLS REAR VIEW CAMERA CIRCUIT RECOGNITION AUDIO LOW REF RECOGNITION AUDIO SIG RED/BLU WIRE RED/VIO WIRE REF SERIAL DATA SERIAL DATA BUS 5 SIG TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE (BEHIND LEFT SIDE OF DASH) USB USB SERIAL VIO WIRE VOICE AUDIO LOW REF VOICE AUDIO SIG VOICE SIG W/ NAVIGATION WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

AUXILIARY AUDIO INPUT BATT POS VOLT BK USB USB SERIAL DATA BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BN GPS/CELL BUS 10 BUS 5 CAMERA SIG 2 CELLULAR MICRO LOW REF CELLULAR MICRO SIG CELLULAR PHONE MICROPHONE COAX COAX BK GPS COAX VT CELL 1 COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM DATA DATA 2 (+) DISPLAY GMLAN SERIAL GMLAN SERIAL DATA (+) 9 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HUMAN MACHINE INTERFACE CONTROL MODULE INFO DISPLAY MODULE INFOTAINMENT REG CTRL LOGIC LOW REF LVDS LVDS BU USB SERIAL DATA MOST CONTROL MOST CTRL MOST SERIAL DATA (+) NAVIGATION SYSTEM NCA WIRE RADIO RADIO CONTROLS REAR VIEW CAMERA CIRCUIT RECOGNITION AUDIO LOW REF RECOGNITION AUDIO SIG RED/BLU WIRE RED/VIO WIRE REF SERIAL DATA SERIAL DATA BUS 5 SIG TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE (BEHIND LEFT SIDE OF DASH) USB USB SERIAL USB USB VIO WIRE VOICE AUDIO LOW REF VOICE AUDIO SIG VOICE SIG W/ NAVIGATION WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

AUXILIARY AUDIO INPUT BATT POS VOLT BK USB BK USB USB SERIAL DATA BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BN GPS/CELL BUS 10 BUS 5 CAMERA SIG 2 CELLULAR PHONE MICROPHONE COAX COAX BK GPS COAX VT CELL 1 COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM DATA DATA 2 (+) DISPLAY GMLAN SERIAL GMLAN SERIAL DATA (+) 9 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HUMAN MACHINE INTERFACE CONTROL MODULE INFO DISPLAY MODULE INFOTAINMENT CTRL LOGIC LOW REF LVDS LVDS BU USB SERIAL DATA MICROPHONE (-) LOW REF MICROPHONE SIG MOST CONTROL MOST CTRL MOST SERIAL DATA (+) NAVIGATION SYSTEM NCA WIRE RADIO RADIO CONTROLS REAR VIEW CAMERA CIRCUIT RECOGNITION AUDIO LOW REF RECOGNITION AUDIO SIG RED/BLU WIRE RED/VIO WIRE REF SERIAL DATA SERIAL DATA BUS 5 SIG TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE (BEHIND LEFT SIDE OF DASH) USB USB SERIAL VIO WIRE VOICE AUDIO LOW REF VOICE AUDIO SIG VOICE SIG W/ NAVIGATION WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE