SecoRüt SecoRüt Trailer Socket Tester Box

This test box wiring / connections of the trailer socket on the vehicle / car and trailer can be checked and monitored. A new thing is the visual display of negative conductors of the trailer socket 13polig (It must be connected to 3 minus lines). The user can also check the connections of the vehicle socket's negative cables 9 and 10. Naturally, the tester box comes equipped with an approximately 5 meter long cable and 7/13-pin combination plug for single person use. Supplied in a practical plastic hard...