Alternator help

Skykeith is correct. Doing both should fix the charging issue, and improve your ignition quality. Check voltage again to verify after changes. The battery if newer, may recovery from the low charge level.

There are also a couple primary wires that appear to be close to the ignition coil secondary tower, best to move those, so they are 1/2" or more away. High voltage there could inject transients, that may have contributed to regulator failure. Transients over time alter resistor values used to control regulated voltage. I learned that doing spark discharge tests.