They're underneath the little triangular plastic panel at the corner of the door. You don't have to take the door panel off to pry that piece out, but it sure helps (and avoids breakage). There are only three bolts that hold the thing on. Replacement is very straightforward. Take off the boot that passes through the little piece at the corner (unless it has power mirrors), and then pry the piece off carefully (after you get the panel off). Then replace the mirror and put it all back together. It really doesn't take as long as it sounds like it takes.
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Chris Herbst, in Wisconsin.