Hello everyone! I have a SL 55 Amg series 230. I have the command center inside, but I appreciate the old one, because in the glove compartment is only a line in plug that looks like for an mp3 player headphones. The problem is that I still have an old phone inside, so not only a hands-free device, but with own car phone. I can’t use my orange card because the 1800 frequency doesn’t work. What’s the best way my iphone 3g da to connect to? I prefer to be able to control the music via the command center. Blutooth only if the outside antenna is used because of the radiation. thank you very much! Mauricio