I finally finished installing my Z120 today. What an awesome unit. Much better than my D1. I played around with the Ipod adapter and my iphone4. Works like a champ. I can play video from my Ipod. I was even able to stream Netflix video through the adapter. Pandora plays great though I had a difficult time figuring out the interface. You have to start the regular Pandora app on the Iphone first before it will connect to the Nav unit.
I did have to reset my amp input levels since the direct audio output of the Z120 is 4v where the D1 was 2v.
The scrolling is a little touchy. If you aren't careful you will select something you didn't intend to select while trying to scroll through menus and lists.
I will spend tomorrow morning putting all my car panels back in place and will then take some photos to post here. Thanks to everyone that helped me with the info I requested.