[35ragtop]

Thanks tubman, I have read your posts on that previously and was wondering about getting one of the 1960 s Mustang electronic ones that are on ebay.
I tried Koates idea with the field wire. It made no difference to the ammeter reading which only moves about a quarter of its travel. So no high amp charge showing. The voltmeter attached at the battery confirms that there is a charge coming out of the generator 16+v when revved up.
I might try and borrow a known good unit and see if that works.
Dave