Remove the window regulator handle.
Remove the arm rest.
Remove the door lock knob.
Remove the inner door handle cover.
Using a flat screwdriver, gently separate the door trim panel clips from the door.
Lift the panel to remove it and disconnect the speaker or mirror wires as required.
Installation is the reverse of removal. Make sure the sheet of plastic behind the panel is properly sealed against the metal to keep drafts out of the interior.