I found an iPod connection to my Pioneer HU was Best Buy... Nowhere else had it in stock.

I'd call around first tho..

 

I work at best buy in the bay

We also just started carrying the bus to ipod cables for kenwoods and sonys. and the good ol' alpine.

Personally i use the peripheral connex 2 car. aux in, rca in, and ipod in. good stuff.