ACCMEC's point should not be dismissed out-of-hand. Original current flow for Mopars is 100% through the ammeter. This works fine until it doesn't. If the ammeter fails for some reason and an electrical type fire starts it will take the car with it. Put 2 1/2 times as much power through the stock ammeter and it is 2 1/2 times worse. I've had an alternator fire and it was impressive, flames shooting out of the alternator a foot high until I was able to disconnect the battery.

Now, if one hooks up the loads directly to the alternator, then the ammeter will not see the entire charging current and it will be safer. But replacing the ammeter in the dash with a voltmeter is a good idea for everyone.

R.