Trailer Caravan Tow Bar Socket & Plug Tester Wiring Circuit Plug Checker 13 Pin

This listing is for a trailer/caravan and tow bar socket/plug checker.

Will test both the trailer lights and the vehicle socket.

Can test trailer lights without plugging the trailer into a car.

Requires a 9V PP3 Battery. (not supplied).

Simple to use, plug into the vehicle and turn the lights on to test the tow bar socket.

Connect to the trailer/caravan and press the yellow button to test the trailer / caravan lights.

Easy to read LED display bank shows green/red lights to indicate a fault/pass for each circuit each circuit.

Suitable for 13 Pin Plugs and Sockets.

Tests Brake Light, Taillights, Indicators, Reverse, Fog, 12V Permanent & 12v Switched Functions.