Daze can't post at work right now but he's having a common problem. He has the Kenwood KDC-MP2035 (I think) that was the stock HU in 2008. It is stuck in "Demo" mode so it won't display the "Aux" input. I remember from experience that the description in the manual does not work to get it out of demo mode. Mmandley explained what to do in a PM last year and later posted it for someone else but I can't find the PM or the post. Please respond and help a brutha out. Thanks!