Used Dice Electronics Interface for BMW e46 with brand new Bovee 1000 wireless bluetooth. I converted the Dice electronics to be installed hidden in the trunk and added the Bovee 1000 to make it wireless. This setup keeps the interface the trunk and out of sight. The Bovee 1000 alone is $85+ This is the best bluetooth interface you can have for the money. Made specific for BMW E46.
Asking $120 including shipping.
Per Manufacturer: For use with factory DSP (digital signal processing) radio only Connects to pre-wired CD changer cable and coaxial digital cable in the trunk Works with factory "Standard" or "Business" radio, with or without navigation system.