CURT 58979 Towed-Vehicle RV Harnesses are the ideal solution to connecting your vehicle's electrical system to your RV while dinghy towing. If a custom harness isn't available for your vehicle, this RV dinghy tow wiring harness provides a splice-in option. It has a universal design and comes with butt connectors to splice into the vehicle's electrical system (not compatible with PWM systems).With a towed-vehicle RV harness installed, hitching up your vehicle behind your RV is fast and easy. Simply plug the provided 4-way flat connector from the front of the vehicle into the RV's 4-way flat socket. The RV harness uses the vehicle's existing taillights, turn signals, and brake lights, eliminating the need to purchase additional lighting. The vehicle's lights are able to operate in conjunction with your RV's lights, signaling other drivers and functioning just like a standard trailer in tow. Each CURT towed-vehicle RV harness comes with a 4-way flat extension to reach the RV connector socket, a mounting bracket to help keep the wires ordered and protected on your vehicle, and all the necessary hardware for a complete installation.• Connects a towed vehicle to an RV using a standard 4-way flat trailer plug• Splices into vehicle's electrical system with included butt connectors• Validated color-coded wires with wiring guide for easier installation• Integrated block diodes isolate sensitive vehicle electronics from RV signals• Uses towed vehicle's existing taillights, brake lights, and turn signals• Includes harness, 4-flat extension, mounting bracket, and hardwareNOTE: Not compatible with PWM electrical systems. Uses vehicle's existing taillights, turn signals, and brake lights Comes with 4-way flat extension to reach RV connector socket Integrated block diodes isolate sensitive vehicle electronics from RV signals | 58979 Universal Splice-In Towed-Vehicle RV Wiring Harness