Read more Voilamart 7 pin trailer tester plug socket,12v trailer light tester connector wiring tester circuit diagnostic testing tools,adapters for trailer, caravan, truck, boat or RV. Tips: The body plugs directly into either 7 pin N type plugs or sockets and gives a continuity test on all lighting circuits. Specifications: Material: Plastic & Brass Voltage: 12V DC Color: Black Item Type: Diagnostic Tools Item Name: Trailer Tester Battery Type: 9V (the battery is not included) Contents: 7 pin tester + adapter(1 x trailer tester 7 pin\1 x 13 pin to 7 pin trailer adapter\1 x 7 pin to 13 pin trailer adapter) !!!!How to test the connection of a Trailer (can also be a caravan, bicycle, carrier or other commercial vehicle)? 1. Connect the tester with plug or socket. 2. Press the yellow button on the side of the tester. 3.
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