Volvo C70 I (1997-2005) Back-up lamps circuit

A/T BACK-UP LIGHTS SWITCH (ON TRANSAXLE) BLK WIRE BLU WIRE CENTRAL ELECTRICAL COUPE ONLY ENG COMPT) EXTERIOR LIGHTS CIRCUIT FUSE GEAR POSITION SENSOR (ON TOP OF TRANSAXLE) GRY WIRE HOT W/ OVERLOAD LEFT TAILLAMP UNIT BACK- UP LAMP M/T NCA WIRE RIGHT TAILLAMP UNIT BACK- UP LAMP TRAILER CONNECTOR UNIT (LEFT REAR OF