Originally Posted by Mrmiata
Does the wire harness by chance plug into the base of the mirror or hard wired? I'm going to mount my radar detector bracket to the hole in back and was wondering if I need to pull the light cover for slack in the wiring or not..
Are you thinking of tapping the hole 1/4-20 in place? I would recommend you remove the mirror to do it.
1) you only get ~ 25% thread. Into pot metal (cast zinc). It is not a #7 hole. You'll want to make a stud assembly using a very thin nut inside and outside and a 3/4" long stud or set screw, or use a Button Head screw from the inside, and a coupling nut on the outside. Anything larger (read: taller) seems to interfere with the mounting hardware inside when you twist the thing back into place.
2) If you do try to tap it in place, there is ~ 5/16" space inside the shell before you hit the mounting hardware. Use a bottoming or plug tap.
Best of luck, though. It's one of the things I plan on doing one of these days too. I bought one of the Auto Dimmers from Alaxfire too. Nice feature they decided "der Americaners" didn't really need...
