My first attempt for a iPhone 4(and 5 if it fits) adaptor for my Roadster, fresh from my 3d printer. Fits very well.
The original alpine iphone 3 dock connector is just hidden in the console, and the new cable just goes to a standard car charger (I only use BT for audio anyway).
I am working to add some holder arrangement, so the phone stays in place during "fun driving"