7-Pin Male Trailer Tester, 12V 7-Pin Trailer Plug Tester, Trailer Lighting Circuit Wiring Diagnostic Tool for Car, RV, and Trailer

Quick Check --- This trailer hitch socket has one side for connecting the 7 pin socket of a trailer and another side for connecting the 7 pin socket of a car. This tester quickly indicates whether a fault is in the car wiring or trailer wiring, which can effectively test the problem of the 7 pin plug and socket connection. European Universal Standard -- Passes Europe CE, ROHS certification, ensures maximum strength and durability for long-lasting use. Such a practical trailer testing tool you will need. Reliable Quality --- The 7 pin trailer tester with safe and reliable performance, reasonable design. Skillful appearance, convenient use. The trailer tester socket is widely suitable for caravans, campers, campers, vehicles, trucks, trailers, etc. The test requires a 9V battery (not included).High Performance --- The automotive trailer plug tester is made of high-quality ABS and copper.Its frosted surface is durable and reliable, ensuring maximum strength and longevity for long-lasting use.One side connects to a 7-pin plug and the other side to a 7-pin plug; it can also be used with a 13-pin plug with the included adapter.