Trailer tow circuit, with heavy duty for Ford Explorer IV (2005-2010)

BATTERY CHARGE TRAILER TOW RELAY BATTERY JUNCTION BOX (BJB) (LEFT SIDE OF ENGINE COMPT, AT FENDER APRON) BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BOO BRN WIRE CONTROL FUSE 16 SENSE FUSE 17 FUSE 13 FUSE 25 FUSE 7 GRN WIRE GRY WIRE GRY/BRN WIRE HOT AT ALL TIMES HOT AT ALL TIMES SMART JUNCTION BOX (SJB) (BEHIND LEFT SIDE OF DASH) HOT IN RUN OR ACC HSD NCA WIRE ORG/ WIRE PARK LAMP RELAY PWR RED WIRE REVERSE LAMP RELAY TRAIL TRAILER ELECTRONIC BRAKE CONTROL MODULE (BEHIND LEFT SIDE OF DASH) TRAILER TOW CONNECTOR (AT REAR OF VEHICLE, BELOW BUMPER) VIO WIRE VIO/WHT WIRE WHT WIRE YEL WIRE