Bennie, you convinced me that sorting the voltage regulator issue out first was the way to go, and I’m glad you did. I waited to get a new alternator before installing a new coil. I’d known for a while I’d probably need to replace it soon, so it was a good time to do it. Unfortunately though, it still wouldn’t start with the new coil installed, and I didn’t have time to do any further troubleshooting. I’m planning to charge the battery up tomorrow and see if I can figure anything out.