This trailer adapter is used to adapt from a 7RV trailer connector on your tow rig to a 6 pin connector or a 4 Flat Connector on your trailer. The 7RV is what is on most newer trucks and SUV's. The 6 round pin is an older connector that is not uses as often any more. The 4 Flat connector is very common on many utility and boat trailers without trailer brakes. The 7RV has 6 spade connectors . This adapter will run your brake lights, running lights, right turn signal, left turn signal.
