OK. I have a 2003 EB expedition with everything but dvd entertainment system. My rugrats would not accept this. So I purchased a ford expy factory dvd from fleabay. As you prob know, it does not come with the wiring harness. Some people say it is already there. I find that unlikely, but would be a dream come true. Does the harness run str8 along the roof underneath to cd changer, or does it run down door panel? I would also be willing to just install and run power to it, then kids can use headphones. Is this possible and can a light from the center overhead console provide enough juice? thnx for any help.