Access power from rear view mirror box? (ST)

[chrisorm]

Hi,

I've been thinking about trying to hook up my dash cam without having to have a wire running down to the cigarette lighter socket.

I was thinking i might be able to hook into the black box behind the mirror, It has a bunch of sensors and the dimming mirror uses 12V DC as far as I know.

Has anybody done this or know where to get a wiring diagram of this?