There are several different types of connectors used to supply power from a tow vehicle’s electrical system to the trailer’s electrical system. Some trailers only need the bare essentials – running lights, brake lights and turn signals – while others require a connection for reverse lights, electric brakes and auxiliary power. With connectors ranging from 4-way flat to 7-way round, there is a good chance that the connection between your vehicle and your trailer will be mismatched. For this very common problem, CURT offers a quick and simple solution. We have an entire array of adapters that allow a connection between most types of connectors, including 7-way RV blades. CURT adapters are available in formats such as 4-way round to 4-way flat, 4-way flat to 7-way round, 6-way round to 4-way flat and many more.