Maypole 13 Pin Car & Trailer Light Tester MP1802B

13 pin car and trailer tester is suitable for testing ISO 11446/13 pin lighting & 12V power supply circuits
LED indicators clearly show any faults
Suitable for testing LED & filament bulb trailer lighting
Requires 1 x 9V PP3 battery (not included)
Notes & instructions for use:

The yellow button on the side must be depressed and held down to test a function. Releasing the button ends the test
LED indicators will show green when function is tested and correctly wired, or red if a fault is present
12V power supplies can only be tested on the towbar side
Towbar testing requires vehicle ignition to be switched on and each function activated in turn
Only for use with 13 pin plugs and sockets.
Can be used in conjunction with a suitable adaptor (eg; MP6005 or MP6015) to test 7pin/ISO1724 lighting circuits
Do not check towbar and trailer functions at the same time