This cable simply connects to the back of the radio and provides an AUX input option on the radio or navigation display.
Once selected any audio source connected to this Aux input jack is played in stereo over the vehicle's speakers.
Open your CD changer, press MODE to see whether the AUX is on.
Then the CD MODE will show another mode AUX INPUT besides FM CD mode.
If AUX INPUT cannot show, then the cable cannot fit.

Features:
Cable Length: 1.5M
Socket Type: female 3.5MM
This Kit will give you a 3.5mm female Jack plug to your i-Pod or other MP3 player to plug into your B-MW stereo.
Since it plugs into the aux port directly on the back of the head unit, there is no loss of sound quality.

Fitment: for i-Pod, mobile phone, MP3, CD player and other portable device.
Compatible with:
B-MW 5 Series (E39 with SA 661-650)
B-MW 5 Series (E60, E61)
B-MW 6 Series (E63, E64)
B-MW Z4 Series (E85 with SA 662)
B-MW X3 Series (E83 with SA 662)
B-MW X5 Series (E53 with SA 661-650)
This aux cable is compatible with B-MW X5 without navigation
Radio Boost CD 53 / Business CD
SA 650 (Radio Business with CD drive)
SA 661 (Radio Business with CD drive)
SA 662 (Radio Business)
2003 - 2008 B-MW (E85 / E86): Z4 (2.0, 2.5, 3.0 & Coupe and Convertible models)
2004 - 2010 B-MW (E83): X3 (2.0, 2.5, 3.0 & xDrive models)

Note:
There is a small arrow on one end of the connector. That needs to face up when you put this into the stereo.
Make sure you push the connector ALL the way in. It's a deep connector so make sure you push hard.
Before you buy, please be sure that the connector is fit for your car. (12-pin socket casing). Please check, if Your Head Unit has MODE button on it.
It's not compatible with older units, units without MODE button or cassette and Navigation Players.

Package Include:1x AUX adapter cable