A few people here have reported that the adaptors do work... Maybe they're not all the same.Originally Posted by 632 Regal
The cdx-m30 cable doesn't work with the bmw radios, apparently two wires are swapped over, so it's good you didn't buy the $90 cable!
I don't know why the cars are fitted with 14 pin cables, since there are only 10 pins coming out of the radio...