Originally Posted by Jeremy5848

Assuming the Becker has a cassette deck, you can get an adapter that looks like a cassette but has a wire coming out of it. Put the adapter in the Becker's cassette slot and plug the wire into the headphone jack of the Blackberry. It's not a really good solution (sound quality is of the "fair to poor" variety) but it's easy, not expensive, not technical.

If the Alpine unit has a CD payer, there's no equivalent gadget. Any good auto stereo shop ought to have a technician who can wire a jack on a pigtail into the unit so that you can plug the Blackberry into it. Becker offers such a service for their stuff -- about $100. Alpine might also offer that service.

This also works with MP3 players and anything with a headphone jack. You may find that you need to adjust the volume controls up more than normal.