Adapter will allow you to tow a camper or boat trailer by converting a 7-way blade connector socket to a 4-way or 5-way molded connector. Connects Ground, Left-Turn, Right-Turn, and Stop Circuits. 5-way is configured for those trailers that require an electric brake circuit. Features quick and easy plug in installation, non-corrosive nylon shell and tethered cap to seal against dust and moisture. Priced each.