Well, there's so many threads that talk about broken battery cable connectors, I couldn't decide which one to grab. This one is as good as any...
Either we've been too hard on RE for their crap connectors, or too easy on NAPA by praising their replacement terminals Part #784572, like in Scott's photo at the top of the thread.
Why, you ask? I got stuck on the side of the road again - you guessed it:
For the second time, I road-repaired the cable by cutting off the broken connector, stripping the wire, and simply wrapping it around the battery's screw. I'm tempted to leave it that way!
Is there a way to come up with a more flexible solution, but that wouldn't fatigue so quickly? Either way, I think I'm going to have to replace the ground wire - it's getting too short!
The good news: though I was on my way home on a long trip, and it was getting late in the day, I had my tools with me, and I had no worries about not being able to fix the problem. Even as I was pulling over on a safe spot on a side road, I was already thinking through the troubleshooting steps and ideas I would try that I've learned here on this forum. It seemed like an electrical problem, and even though I'd
already fixed the battery terminal issue, I checked that first. Sure enough...
So, thank you again everybody!!!!