Back-up lamps circuit for Chevrolet TrailBlazer I facelift (2005-2009)

1 2 52 50 BUS (+) BUS (-) TR SW P TR SW B 23 46 TR SW C TR SW B TR SW P TR SW A BUS (-) BUS (+) 4.2L 5.3L, 6.0L 4.2L BACKUP FUSE 27 BACKUP LAMP BATTERY B/U LMP VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BENEATH LEFT REAR SEAT, ON REAR FUSE BLOCK) COMPUTER DATA LINES SYSTEM DK GRN WIRE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START LEFT TAILLAMP CIRCUIT BOARD LT GRN WIRE MIRRORS SYSTEM (AUTOMATIC DAY/ NIGHT MIRROR) NCA WIRE PARK/ NEUTRAL POSITION SWITCH (ON LOWER LEFT SIDE OF TRANSMISSION) PNK WIRE PARK/NEUTRAL POSITION SWITCH (ON LOWER LEFT SIDE OF TRANSMISSION) PNK WIRE REAR FUSE BLOCK (BELOW LEFT REAR SEAT) REAR FUSE TBC 5 FUSE 32 BLOCK (BELOW LEFT REAR SEAT) RIGHT TAILLAMP BACKUP LAMP CIRCUIT BOARD SER DATA SERIAL DATA TAN WIRE TAN/WHT WIRE TR SW A TR SW C TRAILER CONNECTOR TRANSMISSION CONTROL MODULE TRLR B/U FUSE 4 UNDER- HOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE