The Ford FL3T-15A416-AB Electrical Trailer Tow Wiring Harness (Ford F-Series) is a relay-equipped harness that integrates a trailer’s lighting and electrical circuits with the tow vehicle. The included relay helps manage circuit control for trailer lights when towing with Ford F-Series trucks. Use this part number FL3T-15A416-AB for Ford F-Series trailer tow wiring installations.
