ITEM NAME:7 Pin Towing Trailer Horsebox Caravan Light Connector Tester Check Socket #gib Store Home Promotion Hot Item Add to Fav.Features: 12V connection tester a trailer 7 hole plugs, the other end connected to the car 7 hole outlet. Tester lights will quickly show a trailer or a car coil is connected properly. 7 hole at one end of the trailer plug to the end of the tester.
