Our 2-Plug units are designed for brake controls that have a wiring port built into the back of the unit. Simply plug the brake control end of the wiring harness into the back of the brake control and the vehicle end into the automobile's port. Brake controls that utilize the 2-plug style of wiring harness will be identified with the Plug & Play logo. Intelligent trailer braking is the key to the success of the product line. From its humble origins as a manufacturer of RV stairs and steps in 1964, has evolved to become a trusted name in towing safety. The core product line consists of brake controllers, electrical wiring and trailer brakes. The line has long been trusted by professional towers and weekend warriors for worry-free travel. Professional equestrian trainer, Stacy Westfall is sponsored by the line. Westfall trusts the safety of her horses to brake controls. Smooth, predictable stopping from all speeds has made the Prodigy, Primus, and Voyager trailer brake controls the best in class and the most popular brake controls on the market. No matter what you are towing, will help you stop it - Life is a journey, stop often.