A combined four way and seven way connector assembly for communicating a towing vehicle's electrical system with either a four way or seven way input harness associated with a towed vehicle, the towing vehicle further including a wire harness supplying an output of the electrical system, said connector assembly comprising:
- a housing containing a plurality of electrical circuits which communicate with a first plurality of terminals defining a four way connector and a second plurality of terminals defining a seven way connector, each of said first and second pluralities of terminals defining an input plug in said housing and which is accessible by the towed vehicle input harness;
- and
- connecting means for electrically communicating the towing vehicle's electrical supply wire harness to said plurality of circuits.