I own a 2003 Lincoln Navigator and I was just recently sold a navigation system from a 2004 Navigator. I realize tha size different, but I need to know whether or not I have the appropriate cables built into my truck. If not, I need to return the navigation system. Thanks. :)

I really doubt if it will be easy or even possible to convert to the LS. The best bet is to buy a Pioneer Z2 or similar product from Eclipse.