Ford RV Cutaway E350 Super Duty (1999-2011) Back-up lamps circuit

BLK WIRE BLK/PNK WIRE CENTRAL JUNCTION BOX LEFT SIDE OF DASH, NEAR KICK PANEL) DIGITAL TRANSMISSION RANGE (DTR) SENSOR (ON LEFT SIDE OF TRANSMISSION) EXTERIOR LIGHTS (TRAILER BACKUP LAMP RELAY) FUSE 12 HOT IN RUN LEFT REVERSING LAMP RIGHT REVERSING LAMP WHT/VIO WIRE