Unhook battery number one and just check the voltage on the connector when it is charging.
I think I figured out the problem_..to my surprise the battery switch seems to have an issue where the switch position for battery #1 seems to have an internal contact issue. You need to really wiggle the switch in position #1 to get the current through. Yesterday once I figured that out and wiggled the switch I was getting over 14 volts from the alternator to battery #1.
I have a new switch on order so hopefully that will be one more thing I can cross off the list. I did get manage to get the oil changed yesterday as well_..and re-wired the fuel tank gauge_..it is always fun crossing off items on the to-do list, although those items being added at the bottom always seem to come quicker__
