Curt T-Connector

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Product Information

CURT manufactures over 1,000 different trailer hitches to meet every possible towing need. It is our goal to always be your best option for towing by providing a complete line of quality products and being first-to-market with towing products for each new vehicle. If we can get you out on the road with a hitch you can enjoy for years to come, doing more of what you love, we have done our job.


A CURT custom vehicle-to-trailer wiring harness (also called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom vehicle-to-trailer wiring harnesses come into play. Custom wiring harnesses plug into your vehicle’s electrical system using original equipment (OEM) connectors.

Leading the industry in towing electrical products, CURT offers two options for custom vehicle-to-trailer wiring. Our custom wiring harnesses use two or more OEM connectors to plug into your vehicle’s electrical system, typically at the tail light housing. The harness provides an additional connector in the form of a 4-way or 5-way socket that branches off to allow the trailer to be plugged into the vehicle’s power system. The other custom wiring option is our custom wiring connectors. These use a single original equipment connector to plug into a specific socket provided by the vehicle. Automotive manufacturers design some vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector.