RV Trailer Connector Adapter, 7-Way to 4-Flat or 6-Round

7 way rv to 4 flat or 6 round adapter, for a vehicle with a 7 way rv blade style towing connector to allow a trailer with a 4 way flat, 5 way flat or 6 round style towing connector to hook up to the vehicle to make the stop/tail/turn lights & electric brakes to function while towing the trailer, made of high impact plastic to reduce corrosion.