Does this mount at the factory mirror points with no drilling?

Yes—this mirror uses factory mounting points on your door. No modifications to the door panel required.

What wiring does this need, and is there a diagram included?

Wiring specifics and diagram inclusion are not confirmed—contact support with your VIN for exact harness requirements before purchase.

Will the heated element work in really cold climates?

The heating circuit is designed to clear frost and condensation. Actual performance depends on ambient temperature and electrical draw—test after install to verify adequate defrost speed for your region.