Look at the Clearview mirror thread. It details the process Pop tweeter off and unplug. Remove plastic screw cover. unplug mirror. Remove 3 bolts. 1 bolt you need an L shaped Torx 10, or remove the door panel. I used the Allen / Hex key L shaped T10 and did it without removing the door panel.
Little heads up and info...
I replaced my OE mirrors with the Clear View...
The Torx size for the OE mirrors are a T-30. When I replaced my mirrors, instead of using the OE bolts (3 per mirror...they are metric, M6 x 18) I used some metric hex bolts, M6 x 20, available at any Lowes/Home Depot.
Hex bolts just make it much easier to take off and put on if you ever need to replace them again.
I like torx, but the slots have a habit of stripping if not done right...once you strip/enlarge/round off a torx head, its the devil to get out. Regular hex just makes it easier.
Just my experience...