Gave in and got it fitted by Bass junkies, not cheap, and quite gutted about 2 things...
1) THe ipod wire doesnt run from the rear of the stereo so I have a garish white usb at the front,
2) Bought it from America as it was £100 cheaper, but this gives 2 problems, the rear connector was different, costing me an extra £45, and the DVD player is obviously region 1, only plus side is that im never going to watch dvds on it, but still like to have the option!