Trailer Wire Harness and Connector - Best Replacement Get the job done with the right part, at the right price. Find our best fitting trailer wire harness and connectors for your vehicle and enjoy free next day delivery or same day pickup at a store near you! Trailer Wire, Harnesses, Plugs & Connectors | www Trailer wire, harnesses, plugs and connectors. Latest posts. AXLE PLACEMENT & TONGUE WEIGHT The foundation to every great Trailer, its Axles! If you find yourself looking to upgrade,..