So, how do you know that...
Checked the resistance between the two pins, and between each pin and earth and it all came up as it seems it should.
Runs fine with a jump start and is charging with correct voltage, so im expecting it to be good.
I updated to a Crane Cams reg with a built in trickle charger, so thats killed 2 jobs with one part.
Thanks again mate, i owe you a beer next Pub Run Challenge.