Trailer tow circuit for Ford Ranger I (1998-2006)

BLK WIRE BRN WIRE DK GRN WIRE EXTERIOR LAMPS CIRCUIT FUSE 1 FUSE 2 FUSE 31 HOT AT ALL TIMES LOW CURRENT BOARD MAIN LIGHT SWITCH OFF HEAD PARK PARK LAMP RELAY PNK WIRE RED WIRE SMART JUNCTION BOX (SJB) (BEHIND RIGHT SIDE OF DASH) TRAILER TOW CONNECTOR (AT CENTER OF REAR BUMPER) WHT WIRE YEL WIRE