Amp gauge problem

The ammeter in not were your problem with the fluctuation lies. It is in your charging system (alternator), your ammeter is just reading the influx between charging + and discharging -. What your ammeter is reading when it reads low is that your car is using more power than the charging system is supplying. When it spikes high on the plus side it is making up for the low supply before and when it gets to a point that it has recovered the ammeter pretty much zeros out. Chrysler cars are notorious for discharging at or near idle. To fix my cars so they don't do this I change alternator after alternator to find one that won't do this. If I wasn't so stubborn about using other makers stuff I would just put a GM internal regulator alternator on it. The Delco Remy alternator is a very stable output alternator at all rpm ranges.

As far as the thing about the ammeter being a weak link in the charging system is also true, for that matter anyplace there is a connection can be a weak link, like the bulkhead connector in the firewall for example. I just wanted to point out if you remove your ammeter it won't cure the problem of the voltage and amperage fluctuation.


Chuck