Trailer Tester 12V 13Pin Wiring Diagnostic Tool for RV

1 Trailer Tester: This tester has one side to connect the 13 pins plug of a trailer and another side to connect the socket of a car, makes it convenient to use. 2 Main Function: This trailer plug tester can help you to quickly check the circuit failure of both vehicles and the electrical system on trailers, and resistance test. 3 Durable Construction: Made of high strength ABS plastic and copper, which is impact resistant, wear proof, anti aging, and has long service life. 4 High performance: Using brass as conductor, with good electrical conductivity, ensuring more stable function and high practicality. 5 Fine Workmanship: Requires 9V, PP3 battery power, (not included), can test trailer, caravan lights without attaching to a vehicle, very simple to use.

What's in the box
1 x Trailer Tester