I'm putting a remote mirror in a car that never had one and I have a few questions. 1) Which hole in the inner door skin does the joystick mount through? I thought I'd find a "D" shaped hole but no such clue seems to exist. 2) Does the joystick mount rigidly to the inner door skin, or does it just pass through and mount rigidly to the interior door panel? 3) I have the chrome bezel, but am I missing perhaps some kind of a keyed washer backing plate, and if so where can I get one? 4) Where do the two cable routing clips snap into; I can tell that the cable needs to loop in front of the glass, but I dont see any obvious locations to snap these two clips into? 5) How can I tighten up the retaining nuts in my outer door skin and keep them from spinning during installation? Thanks!!