Trailer Tester 7 pin (LMX1814)

12N 7 pin tow bar and trailer electrics tester 

Suitable for testing ISO1724/12N 7 pin circuits

Can test both 12N 7 pin socket on vehicle and 12N 7 pin plug on trailer

LED indicators clearly show any faults

Requires 1 x 9V PP3 battery (not included)

Not suitable for use with LED trailer lights

Towbar testing requires ignition to be switched on and each function activated in turn

Indicators will show green when function is tested and correctly wired, or red if a fault is present