2003 expy factory install

I just purchased a 2003 EB expedition. It has everything in it but the rear dvd entertainment system. My kids will not accept this. So I bought a Ford factory dvd from ebay . It is brand new w/o wiring harness. I will bring it to an installer to cut the hole and put it in. My question is, is the wiring harness already there to plug into? Or will i have to find a wiring harness. I was thinking worse case could I just have them run power from the console light right in front and let the kids use headphones instead of going through 6 disk cd player if i can't find wiring harness. Is anyone in this same situation?

I just purchased a 2003 EB expedition. It has everything in it but the rear dvd entertainment system. My kids will not accept this. So I bought a Ford factory dvd from ebay . It is brand new w/o wiring harness. I will bring it to an installer to cut the hole and put it in. My question is, is the wiring harness already there to plug into? Or will i have to find a wiring harness. I was thinking worse case could I just have them run power from the console light right in front and let the kids use headphones instead of going through 6 disk cd player if i can't find wiring harness. Is anyone in this same situation? no it isnt there.