CURT Manufacturing 56320 Custom Trailer Wiring Harness (Provides a 4-Way Flat Connector for Specific Ford Vehicles) Plugs into vehicle tail light assembly to provide a 4-way flat socket Simple plug-and-play design eliminates the need for cutting or splicing 4-way flat output connects tail lights, brake lights and turn signals Equipped with a powered 3-wire to 2-wire tail light converter Constructed with SMT circuitry for better performance and durability