Trailer Lamps: Overview
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 trailer tow system consists of the following components:
- Trailer tow connector
- Trailer tow relays
- TBC module (if equipped)
- BCM
Vehicles not equipped with trailer tow require a Ford authorized accessory kit to add this option. Adding bulbs/lighting to existing circuits can cause the BCM to shut down the circuit and set a DTC due to the unexpected current flow.
When the vehicle's rear stop/turn, parking lamps or reversing are illuminated, voltage is also supplied to a corresponding trailer tow relay located in the BJB .
Vehicles with a class III hitch are equipped with circuitry to support an aftermarket TBC module and provide voltage to the trailer tow connector when the ignition is in RUN for trailer battery charging.