Well, I definitely was going to replace the wiring harness, regardless...
I was thinking also of calling the dealer I bought the car from and seeing if I could talk to the tech boss there and get some advice from him.
What do you think?
If the original dealership weren't so far away, I'd go there and let them suss it out, but that's an hour and a half--with this stalling issue, it's a $300 tow.
So I can't keep going back to them...