The battery isn’t charging at all, but I’m getting 15v+ testing between the alternator casing and the battery ground when running and just over 12v when off. Battery was recently recharged. Battery reading just over 11v when running and at 1500-2000 rpm, so I think this may mean the battery isn’t charging but the alternator is working.
Checked connection between positive out from voltage regulator and positive post on battery and got -0.00v to–0.01v when I think it should be -0.05v?
Battery test at Auto Parts store suggested bad voltage regulator. Could a bad regulator cause the battery to not charge (rather than over-charge) or is this more likely bad connections/wiring? Suggestions welcome! Thank you!