Ammeter to voltmeter conversion

The guy at Williamson said they convert them and unless the customer wants the dial to actually read volts, they simply leave the ammeter face as is and do the conversion. The needle simply goes all the way to the left with key off and about two thicknesses to the right of center when running. He said in the roughly forty years they've been in business, they've never seen a fire caused "just" by the ammeter gauge. He said there was always something else that failed.

He also mentioned an article in Hot Rod magazine a while back that although he was grateful for, because he got lots of business from it, that he thought they unnecessarily scared people into thinking the ammeters are a bad thing. They actually like the Mopar system. He did say that if you planned on "much more" than a fully loaded stock vehicle could handle that you would probably want to do "something" then. Seemed like a pretty honest guy.