Trailer Tester, 7 Pin 12V Car Truck Trailer Plug, Socket Tester Wiring Circuit Light Electrics Circuit Diagnostic Test Tool, for Caravan RV Truck Trailer, Made of Plastic and Copper

?【7 Pin Trailer Tester 12V】: This Trailer Tester can effectively test what the problem is for 7 pins plug and socket connection. Which is suitable for European cars., ?【High Quality】: This trailer plug tester is made of high-quality plastic and copper, lightweight and durable, with safe and reliable performance., ?【Easy to Use】: Just insert the lighting and cable tester into the socket or plug to be tested, press the test button, and the LED display can provide clear diagnostic information., ?【LED Indicator light】: The tester is equipped with 6 LED indicators, which can indicate the wiring failure of the car or trailer. It is easy to use and practical., ?【Wide Application】: 12V plug and socket tester for electric trailers. One end of the trailer 7 is connected to the 7-pin plug and socket of the vehicle. Widely used in automobiles, caravans, recreational vehicles and other vehicles.