I have the need to replace one of the outside rear view mirrors on my '00 300m. Well, technically not the entire mirror unit - just the plastic outer shell. The mirror and internal guts are probably fine. I see that rock-auto sells 2 different mirrors - one with a 3-pin connector and one with what looks like a dual-row connector with about 12 contacts. My mirror has this dual-row of contact (but my mirror is not heated). The 3-wire mirror is selling for $30, the dozen-pin mirror for double or more. I've removed 2 small torx-style screws from the back inside of my mirror, but there must be more to it because I still can't pull the mirror and guts out of the plastic shell. Is there some trick to removing the actual mirror to gain access to what-ever else is still holding this thing together? I'd rather just buy the cheaper mirror and swap the mechanism.