7 Pin Trailer Towing Tester LED Lights Wiring Circuit Plug and Socket 12V Description: _x000D_ _x000D_ _x000D_ This trailer tester is designed to test 7 pin plugs and sockets on a car and trailer and warns of any wiring circuit failure on the car or trailer. _x000D_ _x000D_ side for connecting to a 7 pin plug of the trailer and the other side to the 7 pin socket of the towing vehicle. _x000D_ _x000D_ Makes the checking of the wiring quick, easy and simple. _x000D_ _x000D_ LED Indicating lights. _x000D_ _x000D_ Tough, durable plastic casing. _x000D_ _x000D_ Specification: _x000D_ _x000D_ _x000D_ Specification:12V / 7 Pin _x000D_ _x000D_ Requires a 9V Battery (Not included) _x000D_ _x000D_ Size:Approx.195*50*25MM _x000D_ _x000D_ Material: _x000D_ _x000D_ Package Includes: _x000D_ _x000D_ _x000D_ 1 x Trailer Tester _x000D_ _x000D_ _x000D_