Cadillac CTS I (2002-2007) Back-up lamps circuit

3.6L 646 1807 PPL 771 772 2501 2500 36 24 21 20 SIG B SIG C BUS - BUS + AUTOMATIC TRANSMISSION BACKUP LAMP SUPPLY VOLTAGE BACKUP LAMP SWITCH (M/T) BACKUP SW SIG BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE HOT AT ALL TIMES INSIDE REARVIEW MIRROR (ISRVM) LEFT BACK-UP LAMP RIGHT BACK-UP LAMP LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LICENSE LAMP ASSEMBLY LT GRN WIRE REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) RELAY CONTROL SERIAL DATA REV LAMP RELAY REVERSE LAMP FUSE SIG SIG A TAN/WHT WIRE TRANSMISSION CONTROL MODULE (TCM) (A/T) (AT RIGHT FRONT OF ENGINE COMPT) TRANSMISSION INTERNAL MODE SWITCH (IMS) WHT WIRE YEL WIRE