I will try to get some photos up later today.
The dvd headrests are wider than the stock ones, but not as tall. If you measure the stock headrests, they hardly seem wide enough to fit a 7" screen in there with speakers, so I think that is why these are 11" wide.
As far as hook up, I was going to run a wire to the fuse box so when I shut the car off, the players go off. However it is time consuming and a little more difficult then the route I took . What I did and it only took me about 15 minutes, is to remove the back panel of the center console(the part where the air controls are for the rear seats). When you do this you have access to the wiring for the cigarette lighter and auxillary hook up. The cigarette lighter has a black cable and a yellow/black cable. I hooked up the power of each headrest to the appropriate cable of the cigarette lighter.
The DVD headrests have 2 sets of cables coming from the poles of the headrest. One set will hook to the other dvd player so you can watch the same DVD on both headrests. The other set has a cable attachement with a red cable and black cable coming out of a fuse box . This is what will power each DVD player. Hook the black cable to the black cable of the cigarette lighter. Hook the red cable to the black/yellow cable of the cigarette lighter. Now you have power!! When you shut the car off, you will have to push the power buttons on the DVD players to shut them off. I have not found this a problem since I am back there anyhow to get the kids out. Plus my son is old enough where he knows to shut it off.
Sorry about not including photos, I will soon. To tap into the power, radio shack has some attachments where they crimp into the wire.....very easy.