Thanks so much for your time and the reply. The measured voltage across (+) and (-) posts is 12.6V at idle around 750-800rpm. Since I am able to detect a bit of alternating current (0.5mV) at idle as well and came up with no appreciable change in amperage drawn on removal of all the fuses and fusible links, I’m going to assume it’s the alternator. I didn’t pull any relays - would it be best to do this as well?