Car Parts Garage Equipment Trailer Parts & Accessories Car Care & Accessories Home & Garden 7 Pin Trailer Tow Bar Light Tester
This 7 Pin Tester is designed to indicate a failure in the wiring on your trailer, caravan or horse-box with a six light LED system. Quick, easy and very simple to use. Just plug the tester in the 7 pin socket or the 7 pin plug of the trailer / caravan and press the yellow button on the side of the tester.
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