Bigfish 3.5MM AUX INPUT INTERFACE ADAPTOR CABLE KCE-237B Replace KCE-433IV FOR IPOD MP3 ALPINE IDA-X301 IDA-X301RR IDA-X303 IDA-X305 IDA-X305S CDE 101R RM 102RI 103BT 104BTI W203R For connecting a portable MP3 player or similar to a Full Speed Head Unit Compatible with ALL Alpine iPod Full Speed head unit Compatible with all Alpine 2009 iPod Full Speed Models This lead will allow you to connect any portable MP3 player, mobile phone or similar device which has a 3.5mm Jack Plug input to any Alpine Ai-NET connection Head Unit