I use iphone4 adapter plugged into the back of the OEM headunit, with a blutooth connector (like this
http://www.ebay.co.uk/itm/like/12159...f14=108&ff19=0) attached to that for wireless connection to an iphone5.
Only downside is that the radio adaptor needs power via a USB adaptor, it all tucks in the little cubby hole below the radio when not in use.
Anyway, all a bit pointless really given the crap sound quality of the radio and awesome sound quality of the engine
