Originally Posted by chriszeh
Not sure what years darks M3 is but 08s are all prewired for the alarm, so they all have the red bulb on the underside of the mirror. Made it so I could install the alarm as a DIY.
Good point, my Z4 30is from 2008 (white one with soft top in my garage) came with the red bulb, however no alarm. Dealer then installed it naturally I had to pay for it
So he may be prewired and not connected. I never had a 2008 M3, perhaps others can chime in to help out. I like the alarm to work on my cars if nothing else bud a deterrent.