I picked my adapter for my Memphis at BestBuy. I just asked the car stereo person for one for a CrossFire, and I'm pretty sure this was the one. Its a US male to euro female. This one is amplified which really helped the reception using the hidden antenna in the CrossFire.

"Scosche - Amplified Antenna Adapter for Select Vehicles

Model: VWA4B SKU: 7276752

Compatible with select vehicles
Including 2000 and newer Audi, BMW and Volkswagen models to update your vehicle's sound system."


The phone mute wire isn't needed because its for an add on blue tooth module. The Memphis is plug and play which is sweet. Just match the factory plug with the section on the back of the radio that's the same shape and you're good to go! I used one of the other wiring harnesses that came with the radio just for the remote turn on wire for powering the antenna.

You will need to use the metal sleeve that comes with the radio. Just dry fit the sleeve to get it in to the right depth for what looks best, then bend the retaining tabs and lock it in place. Swapping the Blaupunkt for the stock radio is a super quick, easy job.

Tom