All fixed! Started out with corroded/failed/disintegrated crimp connector at the trailer hookup, and somehow the wire at the leaf spring hanger got pinched and broke off, even though it was still wrapped up in the frame.
Lots of soldering last night!
Passenger side window also managed to pop out of the tracks over the weekend... no damage, rot, or bends.... too much fun? nahhhhhhh. It's nice having access to a heated shop to fix broken shit!