Backup lamps circuit for Buick Envision II (2020-2024)

BACKUP LAMP CTRL BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU/YEL WIRE CAN BUS (+) 2 CAN BUS (-) 2 SERIAL DATA COMPUTER DATA LINES SYSTEM GRN/WHT WIRE HOT AT ALL TIMES INSIDE REAR VIEW MIRROR INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LEFT LIFTGATE REAR COMBINATION LAMP LIGHTING CONTROL MODULE LOGIC MID LEVEL LOW LEVEL NCA WIRE RADIO RED/BLU WIRE RED/YEL WIRE RIGHT LIFTGATE REAR COMBINATION LAMP SIGNAL GROUND TOP OF TRANSMISSION) TRANSMISSION CONTROL MODULE WHT WIRE