BMW Auxiliary audio input adapter, Most Bmw radios from 1996 and up have controls for external Bmw CD changer, Satellite radio XM , you can use this plugs to add an auxiliary audio interface, By adding an auxiliary input to your BMW factory system you can connect any portable audio source to your stereo, Auxiliary input converters aux are designed to convert this ports of the Bmw radios into audio input. Devices such as iPhone iPod, DVDs, Mp3, Bluetooth android, and Satellite Radio can be added to the Bmw radio without Fm modulation or transmitters the audio quality is CD crystal clear this technology maintains full function of all Bmw factory controls. If using an iPod interface adapter, the iPod text will be display on the BMW radio and cluster, If using an iPhone you can also stream music from Internet services like Pandora, Livio Radio and iHeart Radio If the BMW cd changer is present it needs to be unplug, cables are on the left side of the Bmw trunk 3 and 6 pin plugs near the factory amplifier. If you need help finding the correct aux interface for your BMWe-mailus or 888-2310395Bmw iPod adapter