Check the listing for details. Curt 56442 Trailer Wiring T Connector With 4-Way Flat Trailer Connector. Condition: New. Listed at 96.76 USD. Making memories doesn't start when you reach your destination; it starts at the very first mile of your journey. Wherever your road begins and wherever it takes you, Bring It® with the power of CURT. CURT custom wiring provides everything you need to connect your vehicle's electrical system to a trailer. With plug-and-play connectors, a custom wiring harness easily integrates with your vehicle taillights to provide a standard trailer wiring connector, typically in the form of a 4-way flat. It uses OEM-compatible connectors to "T" into the vehicle's taillight assembly and provides a standard 4-way flat output to power the taillights, brake lights and turn signals on your trailer. To complete this custom wiring harness, it comes with a rubber dust cover.