EVERGD 12V 7 13 Pin Car Trailer Tester Towing Lights Wiring Circuit Plug Socket for Caravan Truck or

The 7 pin trailer light tester is designed to indicate a failure in the wiring circuits on both towing vehicles and trailers promptly which is a lighting and cable tester for trailers and towing vehicles. This trailer plug tester is easy to operate. One side connects to 7pin plug and the other side to 7-pin socket, also can be applied to 13 pin with the adapter. Normal European standards, widely used in automobiles, caravans, recreational vehicles and other vehicles This trailer plug tester is made of high-quality plastic and copper, lightweight and durable, with safe and reliable performance The tester is equipped with 6 LED indicators, which can indicate the wiring failure of the car or trailer.Due to the internal battery supply, no external power source is necessary. Trailers do not have to be connected to the vehicle either. Our test device guarantees the fastest and easiest search for cable line defects on trailers and on towing vehicles.Defective cable colors are indicated by the device via LED.