The TowSmart OEM to 7-Blade and 4-Wire Flat Vehicle Wiring Connector for Ford, GM, Dodge is the quickest and easiest way to make electrical connections when hauling a trailer that has a different wiring configuration than the vehicle. The single housing design provides exact OEM fit with Dodge, Ford, and GM vehicles. This connector is ideal for trailers that require a 4-wire flat connection but have a 7-blade towing vehicle connector. The connector provides taillights, brakelights, turn signals, electric brake, auxiliary power, ground, and reverse lights. The single housing design plugs intoyour vehicle's electrical socket and requires no wiring. It provides an ergonomic, durable plastic construction that iscorrosion-resistant to withstand extreme weather.