Volvo S80 II (2006-2010) Back-up lamps circuit

BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/VIO WIRE CENTRAL ELECTRONIC MODULE CENTRAL ELECTRONIC MODULE (BEHIND RIGHT END OF DASH) COMPUTER DATA LINES SYSTEM GEAR SELECTOR MODULE (GSM) (A/T) GRN WIRE GRN/BLK WIRE GRY WIRE GXX/10 (LEFT FRONT OF ENGINE COMPARTMENT) HOT AT ALL TIMES FUSE LEFT REAR LAMP HOUSING ORG/ WIRE REV REVERSING LIGHT CONTACT (M/T) (ON TOP OF TRANSMISSION) REVERSING LIGHTS RELAY RIGHT REAR LAMP HOUSING TRANSMISSION CONTROL MODULE (TCM) (A/T) (ON TRANSMISSION) VIO WIRE YEL WIRE