you can just Insert this item to the back radio

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.

this cable sounds good as it does not have any resistors to lower the volume and bass.

Condition:100% Brand new

Material:ABS Plastic

OEM ID 65120153502 ( Armrest Position )

  Connector A: 12pin connector

  Connector B: 4 pin connector

Compatibility:

BMW Z4 E83 E85 E86 X3 E70 X5 Mini Cooper