does any one know how to hack the factory radio in a 2008 f-250 pickup, i need to hook up a backup camera to the nav-radio, i know it can be done, i am wondering if anyone knows how or where i can find out how to accomplish this. thanks

http://www.navtv.com/

http://www.tvandnav.com/?gclid=CP6Kj8La ... Ggod31GfSw

There are some more, google it.