I need a cartridge for a 1997 S420 CD Changer. I assume it is the alpine. Where can I find one online? Also my power antenna is not plugged in. I can't find a mating plug. The phone has been removed and those are the only plugs I see. Please advise.

You can get it from anywhere that sell Alpine. In fact, I have a 95 and the CD changer cartridge is exactly the same as Alpine's. I have put the Alpine's into the Mercedes's changer and it worked.

thanks, picked it up today at a local car audio store called "Cartune's". There located only in michigan. the Alpine works great, finally some music.