WHAT IT IS FOR - Keple AUX Lead is OEM AUX cable made to be compatible with B M W factory audio player. This cable uses the correct OEM connector with locking tab to plug into the AUX port on the back of your stereo. Once connected, it will provide you with an AUX audio input, the cable has a standard 3.5mm stereo plug to connect directly to almost any audio device with a headphone jack. | ADVANTAGES - Materials of Wiring harness made of PVC, corrosion-resistant, resistant to oxidation by high temperature. The standard anti-interference design allows high speed transfer and to listen to the music in high crystal clear quality sound. Easy to install and use. Cable length on purpose made quite short to be just in a right compact size. AUX cable fits different models of cars. Keple cord made to be durable and to last long. | EASY TO USE - To start using this Keple harness adapter you will need first to remove the car audio player. Then to connect one part of the cable in the right place on the back side of the radio. It is the easiest way to expand your car radio system to an AUX port. You can use 3.5 plug for your mobile phone, mp3 player and other devices to listen to your favorite music. Please be aware you will need some additional tools to perform all these steps. | COMPATIBILITY - AUX Keple audio adapter is compatible with B M W E46 (2002, 2003, 2004, 2005, 2006 release years) Navigation System: 320i, 320ci, 320cic, 323i, 323ci, 323cic, 325i, 325ci, 325cic, 328i, 328ci, 328cic, 330i, 330ci, 330cic & M3. E39 525i, 525iT, 530i, 530iT, 540i, 540iT & M5. E53 X5 3.0, 4.4, 4.6, 4.8 and X5 M. Please be aware the cable has 3 pins jack. Your current car radio should have the 3 pin plug. | WARRANTY - Our great customer service is available for any questions before or after the purchase.