Just finished installing mine, my car , a 2007 (made in 09/06) was already wired, and the hood switch cable was already routed to the right spot, so it was really easy to install. I got mine from morristown bmw's ebay page, cost me 236$ shipped.
My clown nose blinks, but no chirps...gonna have to go get it activated at the dealer
One question though... I didn't dissconnect the battery terminal before doing it. Should i have done that? i can do it now if it'll help :-p
Thanks.
PS: anyone in the bay area, where did you get your alarm activated, and how much? wondering what the cheapest place to do it is.