I read somewhere that there is an addendum to the iPod controller instructions. It said that if it is connected via the bus cable, then the power and ground don't need to be connected. Any verification on this?

Is it is true, do any of the other modules require their power and ground to be connected. It would be a much cleaner install if all you needed to connect was the bus cable.

Page 14 of Pioneer CD-IB100 install manual show ip bus input and power connections. I suspect the ND-BT! bluetooth adapter is the same. Both need their own source of 12v. Not sure though I'm still waiting for the BT1. FadFusion.com is going to make me wait till next weekend to install. Anyone else have experience dealing with FadFusion.com

ALL IP-Bus devices require their own power. The head-unit turns them on and off over IP-Bus.

What he said...Hook up power, ground, and P-bus to your ipod adaptor

ALL IP-Bus devices require their own power. The head-unit turns them on and off over IP-Bus.

nd-bt1 plugs directly into back of headunit, no power or anything (like usb plug n play).

nd-bt1 plugs directly into back of headunit, no power or anything (like usb plug n play).

Correct, the nd-bt1 is not an IP-Bus device, and has its own port on the back of the Z1/Z2