Well, got that old Ford rewired. I didn't totally redo the underhood wiring - way too much involved to do that - but, the 3G alternator is in there, charging at a nice 14.5 volts, and his tail lights and all that work correctly now too (that wiring was so hacked up...)
Looks like I'll still be spending time with the GF this weekend which is good. Slight change of plans due to this project taking longer so I can't get down there as early, but that's OK.