Finally sorted out my interior electrical issues. The wire taps I was using weren't tapping properly, so I redid some wiring and relocated the ground and everything is working again like it should. Also, replaced the dash illumination fuse, so got my dash lights back as well.
I may have to retouch this, as the boost gauge is a bit dim during the day (Prosport set to amber all the time). But, that means finding another wire to tap, though I think I know which one I might want, and rebuilding the harness I built because I have to add an additional wire. Oh well.