I researched this about a month ago and found out that my local stereo shop has a resource where they can get DVD/monitors pre-installed in headrests that are identical to the original ones. (You can hang onto your original headrests untouched.) Afterwards, they install the new headrests that now have DVD players with the monitor built in, that way each rear passenger can watch a different movie. As far as where they tap into the car for power , I am not certain YET. The entire price I was quoted was around $1600 for both monitors.