Trailer Stop-Turn Lamps
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The BJB supplies voltage at all times to the trailer tow stop/turn lamp relays. The BCM provides voltage to the trailer tow stop/turn lamp relay coils to correspond with the rear stop/turn lamp functions of the vehicle.
The BCM also provides an overload protection of the trailer tow stop/turn relay coil output circuits. When an excessive current draw is detected, the BCM disables the affected trailer tow stop/turn relay coil circuit driver. REFER to MULTIFUNCTION ELECTRONIC MODULES .