Yes, I have the two adaptors....antenna and BMW harness adaptor. I ended up having to splice the Harness adaptor from Circuit City to fit the adaptor from Nakamichi. However, I am not able to use the BMW amplifier....the Nak seems awfully "quiet". I did connect the "remote unit" to the 12V power...and that seems to function, but it just doesn't seem to have as much sound as I expected.