Vehicle Trailer Wiring Harness, Adapters and Connectors Custom fit vehicle trailer wiring harness are available for all makes of vehicles including Ford, Dodge, Chevy, Honda and Toyota. Trailer adapters, trailer connectors and wiring are available from Hoppy, Tow Ready, Pollak, Draw-Tite and Reese. Cheapest trailer wiring prices, guaranteed order online at etrailer or call 800-298-8924 for expert service.Universal Fit Wiring · Trailer Side Connector · Vehicle Side Connectors · Wiring Adapters RV Harnesses - Towing Electrical - CURT Manufacturing Dinghy towing your vehicle is easy with a CURT RV harness. The harness plugs into the vehicle's taillights and provides a standard wiring connector to plug into the RV. We also carry add-ons for equipping the vehicle with its own trailer wiring connector.