Tester 7 Pin Trailer/Tow Socket 12V

Ensure your trailer is connected and functioning properly with this 7-pin tester socket.  Don't get stuck on the road with faulty connections, this tester ensures safe and smooth towing.

When used to test the LED light board, please note that the fog light does not register on the tester as it draws insufficient current. The fog lamp needs to be tested visually. 
9v Battery not included