12N 7 Pin Car And Trailer Tester MP1804B Maypole MP1804B

12N 7 Pin Car And Trailer Tester MP1804B

12N 7 pin car and trailer tester perfect for testing ISO 1724 12N 7 pin lighting and 12V power supply circuits.

LED indicators clearly show any faults.

Suitable for testing  filament bulbed trailer lighting. NOTE  not suitable for use with LED trailer lights

Requires 1 x 9V PP3 battery (not included)

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.

Note:  All caravan or trailer road lights should also be checked before every journey. 

Maypole