WOW!
Thanks to everyone for all the responses!
I re-installed the original battery with same wire connections, and for whatever reason haven't had any issue since. Drove around a couple times, no problems. But - I know there is one.
I did, however, notice that there is a wire junction in the cable that goes from the cranking battery directly to the starter. I'm thinking that could be the culprit.
Used to do basic auto maintenance, but that was back in the 80's when I was a younger guy. Will keep this post updated with my progress (as slow as it might be ;-) .
Thanks again for all the help!
In friendship & safe travels,
EZ EEE
