Looking around this morning... there are two entire positive battery cables just hanging out, going nowhere, and there are two negatives also. Looks like this is just spare wiring from some repair job by PO's mechanic.
Is it possible that I have one of these cables hooked up correctly to allow for it to start, but have the wrong one to the alternator? It looks like a possibility. There are so many choices with wires... It'd have been really easy for me to have connected one of the old ones.
When the car is off, no accessories running, I'm at 11.47 volts, running it drops down to 10v. Gotta find why it's not charging. Potpurri of cables looks like the first mess to sort out