Your problem my well be in alternator BUT also may be in the down stream side, or load if you will. I would think that an analog, not digital, voltmeter across the output would see a fluctuation that ‘mirrors’ are the ampmeter. If down stream pulling fuses, if you have them, is an option.
Last edited by beltfed; 03/31/2019 7:50 PM. Reason: Spelling
