Right there boys and girls this took me long time to find out but most aux leads are only fitted to higher spec vehicles .
After some investigation and some help from ford managed to track down the genuine lead which is avaliable for cars registered after 10/05 so the new shape only really although have been told as long as it is the type with the volume button in the middle this lead will fit .
The lead comes with all fitting kit (three cable ties and plugs straight in back of stereo ) then all you need is a male to male 3.5 mm jack lead from maplins , the ford lead cost less than a tenner including the vat and the ford part no is
Ford Part Number: 1426121
quote this when you order , if you dont have an mp3 player but i pod instead this lead also works ..
Hope this helps and what could be easier