In message , Tim+
writes

Apart from olde worlde charm, if you're planning on keeping it for
many more years wouldn't an alternator upgrade make more sense
than an ammeter?

Well, possibly, but I have owned the car since 1996, and the dynamo has
always been fine. I don't feel I need an ammeter as such, I just found
it in a box of stuff in the shed. No idea where I got it. Found a +ve
earth radio too, so may have a go at that.
--
Graeme