i just purchased a 2003 eb expedition. It has everything but DVD entertainment system. Kids would not accept this. So I purchased one from ebay. As you know it doesnt come with wiring harness. Do you think my expy would have the wiring harness/plug already there when they(installers) cut into the ceiling. Or will they have to run power and just use fm modulator. I also have 6 cd changer if that matters. I pray it's just cutting the hole, mounting the system and the plug being there. Any 1 in this situation? Any info appreciated.