Buick Regal VI (2017-2020) radio backlight low ref wiring diagram

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