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Reply to "Amp meter bounce"

Most likely you have an original charging system 60 amp with an external regulator. There is not a fix using the stock system. If you change to a new internal regulated alternator (I ran GM on all of the GT5-S AmeriSport cars and still run GM style with the bulkhead reduction kits) your amp gauge bounce will disappear as well as excessive battery draw at idle.

Good luck.
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