This electrical converter is designed to convert a 3-wire system to a 2-wire system and provides a standard 4-way flat connector socket to plug in your trailer. It is designed to fit certain models of Acura, Audi, Buick, Chevrolet, Chrysler, Dodge, Eagle, Ford, Geo, Honda, Hyundai, Infiniti, Isuzu, Kia, Mazda, Mercedes, Mercury, Mitsubishi, Nissan, Oldsmobile, Peugeot, Plymouth, Pontiac, Saturn, Suzuki, Toyota, Volkswagen and Volvo