1991-2008 All BMW series with CD Changer connection(3pin+6pin) * Note: Not compatible with the BMW radio which with navigation and 16:9 screen * For 2001 and older BMW with Digital DSP amplifier and 3pin and coaxial output in trunk, it requires extra DSP kit * Original car CDC port set aside , simple and quick to install * Built-in high quality (18 bits,low noise) MP3 / WMA Decoder