Audio Systems: car audio, auxiliary input adapter, interface kit

Question
I have a 2003 mazda 6. The head unit has a single disc cd player and the option for a mini-disc or tape player but has neither. I would like to have either a RCA or stereo jack input for the factory head unit. I have a 1999 Alpine disc changer with an FM modulator that I recently removed from another car. Where can I get a RCA or stereo jack adapter for the FM modulator or is there a better way to do this?

Answer
you need the radio version  to know if tis will work

http://www.oemautosound.com/pc-319-161-pie-mazpc-alp-mazda-2001-2006-auxiliary-i...


this will work for sure it is the ipod interface and will also give you the auxiliary audio input

http://www.oemautosound.com/pc-370-161-dice-i-mazda-r-mazda-2002-2006-ipod-inter...