New_X_O,
It should work this time. You've got all the info you need. I'm sure you're a pro at taking that dash a part by now. You should have no more problems with getting your gauges taped down.
Tapping the wire should be very easy as well. There's plenty of room in there to route wires for the harness behind the dash. I mounted my switch right next to the stock dimmer switch. I had a "blank" location there.