http://mojavetrail.webng.com/AutoDimMirror.pdf
To replace the rearview mirror with a compass on a 2003 Toyota Highlander, first, carefully detach the existing mirror by locating and loosening the mounting set screw, usually found at the base. Disconnect any electrical connectors if the mirror has features like auto-dimming. Align the new compass mirror with the mounting bracket, secure it in place with the set screw, and reconnect any necessary wiring. Finally, ensure the compass is calibrated according to the manufacturer's instructions.
Epoxy is your best bet.
If you are looking for just the mirrored glass - any good glass shop should be able to cut you one and affix the sticky back mounting tape to it. If you are looking for the entire mirror assembly - try a salvage yard. Both options are cheaper than a dealer.
on the inside of the door, opposite of the mirror there is a plastic cover, remove the cover and the bolts holding the mirror on will be exposed.
It's Not too bad , Pop the door clips and there are three bolts holding it in place. Dosconnect the motor controls and go.
A lensatic compass has a sighting lens and a floating dial for precise navigation, while a mirror compass has a mirror for sighting and a fixed dial for general direction. Lensatic compasses are more accurate but require more skill to use, while mirror compasses are easier to read but less precise.
What fuse controls the mirror and compass and temperature in a 2003 Chevy tahoe
how to install driver mirror
To remove and replace the driver-side mirror on a 2001 Toyota Camry, start by carefully prying off the plastic cover at the base of the mirror to expose the mounting screws. Use a socket wrench to remove the screws securing the mirror to the door. Disconnect the electrical connector if your mirror is powered, then pull the mirror off. To install the new mirror, reverse the process: connect the electrical plug, secure the mirror with screws, and replace the plastic cover.
To replace the driver's side mirror on a 2004 Toyota Sienna, start by carefully removing the interior door panel to access the mirror's mounting screws. Disconnect the electrical connector if the mirror is powered, then unscrew the old mirror from its mounting bracket. Install the new mirror by reversing the process: secure it with screws, reconnect any electrical connections, and reattach the door panel. Finally, test the mirror's functionality before finishing up.
There's actually an on/off button for the temp/compass display on the mirror. It is the button located on the left front of the mirror itself. Push this and the display should turn on.
How do I go about restting the mirror-based compass in a 02 nissan Altima?