I handled this project today. The hardest part for sure was figuring out how to get the cover off. The prior posts in this thread were helpful, but none of them really explained the exact spot to pry. That YouTube video up above gave me that information, and then I could see it for myself.
Here is what you get in the package (even though the explanation when you buy it just says "Bolt Set."
On the underside of the mirror, there are two tiny drainholes. You are looking for the one that is up against the car. Not the obvious one that is in the middle of the mirror. And if you didn't read this before, tape the area under the mirror or tape a rag on there or something, because you will likely scratch the paint during this process. Look for this hole down to the bottom right in this pic:
@jamesbe's description is great, but if you are like me and don't happen to have dental tools lying around in your tool box, I was able to bend a heavy duty paper clip into a hook to get it done.
Once you get the bottom bit pried off, go back to what
@jamesbe said in step 6, because there is a little serpentine maneuver you'll need to do to snake the clips off without breaking them (or scratching the paint if you didn't put tape on). When putting the new covers on, just remember that same pattern and it will wiggle into place.
The screws are super easy to ratchet out and then ratchet back in (just hard to see into that little space), but the cover is the spot where you'll need help.