[eamonford]

Thanks so much for all the responses! I will try what Tom Endy suggested (wire the alternator housing directly to the battery ground, and clean the battery ground cable and terminals) and will report back with results. In the meantime, I also tested the voltage with the engine revved up (albeit in idle) and it showed 20V at the alternator! Is this a problem? I thought it shouldn't go higher than about 16V.

PotvinV8, I did consider moving the alternator charge cable to the other side of the fuse like you mentioned, but wouldn't that effectively be like removing the fuse from the circuit and leaving the wires and ammeter etc unprotected?

Thanks again!