Heavy Duty Alternator

If you wanna swap in a better alternator, use the Nippondenso that the factory used. That giant one is just plain silly! Not JMO, read.


You could also swap in the later Chrysler-built alternators, we advise against it. The 100-amp unit is a heavy beast requiring special brackets, and while the later one is viable (V-belt pulley is available) but still not the easiest one to deal with since it’s almost a one-off piece. The best alternator swap is the small, light, Japanese Nintendo (okay, Nippondenso), unit that was phased in during the late 1980s. While radically different at first glance, a closer inspection will reveal some similarities. See photos 10 and 11 for swap information. http://www.allpar.com/history/mopar/electrical.html

P.S. I think there is something wrong with your set-up. Mine stays just to the right of the center mark at idle and jumps to the right when above idle.