7 Pin Plug Socket Cable Wiring Tester For testing the lighting circuits on both towing vehicles and trailers/caravans etc. 12Volt 7pin standard round male to standard round male One side connects to the 7-pins plug of a trailer and the other side to the 7-pins socket of the towing vehicle LED indicates any failures in the wiring circuits on the car or trailer
Specification:
Durable black construction Portable, easy to store with hand held design Power: 9V Battery (Not included)
