Hardwire V1

I have hardwired my V1 into a different vehicle and tapped into the sunroof power so the unit can be mounted high on the windshield for good front/back "vision". Makes for an easy install without having to bury a bunch of wires.
Does anyone know if the same can be done in my 2005 Tacoma by tapping into the power for the compass/thermometer on the overhead display? Any clues on how to remove the panel?