I have a 2001 ML320 with the Bose Sound on the Command Series Radio with DVD Nav. I bought a Parrot CK3000 (might have been 3100). It basically plugs in between the radio and the speakers. But the Bose has an amp so either you have to kludge in a relay to power up the amp when the kit needs the speakers (I did, its not hard) or the kit only works when the radio is on. I put the microphone in the place in the dash where the microphone for the factory kit goes, but the audio is muffled. I'm going to put in near the driver's side visor and hope that clears things up.