CURT 55323 Vehicle Side Custom 4 Pin Trailer Wiring Harness, Select Dodge Caravan, Grand, Dakota, Chrysler Town and Country, Plymouth couplers They can be bolted or 120973 They can be bolted or welded directly onto the trailer frame Features two welded trailer balls on a hollow shank Allows for quick switching between trailer ball sizes Mounts on trailer hitches with a 2" x 2" receiver tube opening Fits 2" or 2 5 16" couplers Permanently attached trailer balls cannot be loosened or stolen Hollow shank weighs less and can be used with an anti rattle kit Shank protected by a durable powder coat finish Polished chrome plated finish on trailer balls Limited lifetime warranty (one year finish If your vehicle is not equipped with wiring for towing a trailer It comes with all necessary wiring components to establish a reliable trailer wiring connection