Gentex mirror w/compass & temp install
OK, here's my attempt at explaining how I installed this.
First, I bought a Gentex 50-GENK50A Auto-dimming Homelink mirror with compass and temperature readout
Next I removed the old mirror by inserting a small screwdriver in the slot in the bottom of the window bracket and carefully prying up until it popped off. Next I mounted the new mirror and routed the wiring in the headliner by prying down on front edge of the headliner.
Starting at the top of the A pillar plastic cover, I pulled it straight back at me and worked my way down until I had it removed. I then routed the wires down it
Removing this cover made access behind the dash much easier
Total install time about 1 hour.
I then ran the sensor wire from the grill through the firewall and to the connector on the wire harness from the mirror
After locating switched and unswitched 12vdc wires and a good ground location, and replacing all the covers that I removed, I was good to go