Towbar Testers

Tester check plug socket 12V wiring. This 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 us. Just plug the tester in the socket or the plug of the motor and press the yellow button on the side of the tester. If the wiring is good, all the LED’s light up. Note 9V battery not included.