Well, upon further review, maybe the alternator belt was a little loose. At least, that's the only thing I could see.
After I first got it going, I took my dog for a run and when I got back home, nothing. No juice. Yeah, all the connections are clean. I jumped it again and took the battery cable off and it stayed running. I tightened up the alt belt and jumped it again and let it run for a half hour or so, and now it seems to be working fine. I did remember in the middle of all this that last time I drove it, which was at night, the lights were getting mighty dim by the time I got home. I didn't really give it a thought at the time. I guess I should have.
