Car Radio USB AUX-In Cable Plug AUX/USB Socket For BMW 3-Series E46 01-05 Wire Harness AUX Cable Adapter

Compatible with the following vehicles:
For BMW 3-Series (Old model cars)
For BMW E46 2001-2005

Specification:
Material:ABS Plastic+copper
Connector A: 10pin connector
Connector B: 8 pin connector
Socket: USB/AUX plug
You can just Insert this item to the back radio
This cable sounds good as it does not have any resistors to lower the volume and bass.
Match your phone or pad mp3 to aux module.and Choose Aux from your radio, then you can use your phone to play music through car speakers.