I found one voltmeter and panel so I'll hook it up and confirm it works.
Clive, the Canadian alternator upgrade did away with the generator panel. The alternator is wired with one light wire for field excitation and one heavy charging wire.
I'm puzzled again. A member kindly sent me the 20 page Canadian Forces installation instructions for this modification. It's very badly written IMO, but it does have a wiring diagram that clearly shows the P wire from the charge light on the switch panel going to the field winding connection on the alternator.
I have tried this and can't get it to work. The alternator overcharges badly using the P wire. As I mentioned in the posts above, the modified Ferrets we have all use the R wire, so I'll stick with that.
Malcolm