1969 Barracuda Fastback

RealWing said
all true except in the case where you have a badly discharged battery. Then the current delivered to accessories and the battery may exceed the approx 35 amps limitation on the bulkhead connectors.

Yes, absolutely - I did not think about this situation. I agree fully.

RealWing said
That was a great idea but still leaves the troublesome ammeter connections. They can also overheat and cause a dash fire. Connecting the alternator output directly to the starter relay or battery is still the best option combined with converting the ammeter to voltmeter.

I converted my Road Runner to a voltmeter and made other electrical changes to allow for more power. I got in a discussion with a guy about the ammeter, and he was insistent that the ammeter itself is not a problem. The ammeter itself is very stout, and the connections are bolted to the ammeter rather than the spade connectors. I agree that I don't like the idea of lots of power running through an ammeter and a single point of failure, but with the changes Wolfgang made I would feel pretty confident that his system would be fine.

Hawk