[mjhcobra]

What do you think about using the Lucas ammeter (50 amp rated) with a 55 amp alternator? Can you use a larger alternator with the Lucas ammeter?
Sounds like using an 80 amp alternator with a max demand load of 60 amps with a good battery should work with the Lucas amp gauge-just pushing it to the limits for those peak demands when the battery is dead and everything is on.

Tough decision for originality.