They mention the turn signals and courtesy lights in the mirrors - but don't have any diagram or instructions - Nice .
Are you going to change the actual turn signal light or just the courtesy lights.
The courtesy lights are pretty easy - Some will tell you to stick a small screw driver under the glass and push down on the bulb housing.
I went from the bottom and used a small screw driver to just pop it out. I didn't want to chip my mirror either.
If you are thinking about the turn signals - I have no idea - as my car doesn't have them in the mirrors.. But if you go to LED for turn signals you may end up with the "fast blink" problem which can be overcome by buying load resistor harness that will eliminate the issue.