Volvo C30 I (2006-2010) Back-up lamps circuit

BACK-UP BLK WIRE BLK/WHT WIRE BLU/RED WIRE CENTRAL ELECTRONIC MODULE (CEM) (BEHIND RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM ENGINE COMPT) FUSE GEAR SELECTOR MODULE (GSM) GRN/BLK WIRE GRN/BLU WIRE GRN/YEL WIRE GRY/ORG WIRE GRY/RED WIRE HOT AT ALL TIMES LEFT FRONT STRUT TOWER) LEFT REAR LAMP HOUSING RED WIRE RED/BLU WIRE RED/YEL WIRE REVERSING LIGHT CONTACT (M/T) (ON TRANSAXLE, NEAR GEAR POSTION CONTACTS) REVERSING LIGHTS RELAY RIGHT REAR LAMP HOUSING TRANSMISSION CONTROL MODULE