On 17/04/18 10:55, Graeme wrote:

Back to the Morris.Â* I have an ammeter, 30-0-30, and the dynamo is rated
13.5v, 22 amps.Â* Still +ve earth.Â* What I don't have is suitable brown
cable, and there seems to be a lot of conflicting advice.

Go for some kind non-invasive DC hall effect sensor, and log the
readings digitally?

--
Adrian C