Dead Rear-Seat Entertainment from Vizualogic, or ?? (1 Viewer)

[Mike Shelton]

I recently bought a 2004 Land Cruiser with a pair of 7" Vizualogic units installed in the front-seat headrests. They don't power up, or show any signs of life. (These are not the tip-out devices concealing a disc player behind them, but apparently just controllable monitors.) There is -- on each side -- a single cable running down the inside back of each seat that appears to run under the tunnel just behind the gear-box area. I would guess (as I can find no additional DVD player) that they are connected to the 6-DVD changer built into the car, and controlled by the rear-seat set of audio controls (which finds the DVD and will play it, but with no output or any other sign of life from the Vizualogic units). I figure I must be missing something, but I don't know what. Do you? Can you help me out? Do you have any idea how these units might (normally) be receiving power? I'd really love for them to work, as I have a sort of manic need for things to work.