Ammeter to Voltmeter...who does it?

^^Almost impossible to answer without knowing what all it's feeding. Such as keeping charged accessory motorhome batteries and other equipment in the home. THE PROBLEM is with the bulkhead connector/ ammeter. That is why the MAD electrical bypass came to be. And it doesn't take much, say 60 amp plus, where you should upgrade the alternator-to-battery charge wire.

If I had a motorhome, I'd want a BIG alternator, 100-120 minimum