Can I fit a Ipod/mp3 cable to my standard headunit I have the head unit with the CDDJ button instead of the AUX one however I know I dont have a multi changer or anything like that already in the car.

I've looked into this myself and from what I've read you can not connect a cable to a headunit with the cddj button. You need an AUX button.

Indeed you do.

One of the reasons I'm getting a new head unit with an AUX in on the front

Could you not just fit the bluetooth module with usb support? that should work.

[quote name='DaveRushton' timestamp='1350585417' post='212363']
Could you not just fit the bluetooth module with usb support? that should work.
[/quote]

Could work yes. But I just fancy a nice new headunit with a touch screen

so what is the CDDJ then as its not something I have heard of before??

The CDDJ button is for a CD changer