In my truck i have an old Alpine CVA-1000 fold out LCD screen (one of the old thick puppies) and i can hit source a couple time and it will switch between Radio, CD Player, and then a black blank screen. I assume the black blank screen it used for a video input. I pulled out the LCD and theres not a video in on the back of the deck, but on my amplifier under the seat, theres a yellow component IN. When I hook it up and turn on a device (let's just say a playstation) and i switch to the blank screen nothing is displayed. When I try to hit setup on the LCD it says I cannot setup while I'm driving but the truck will be off in accessory mode as well as the parking brake set. Any suggestions on how to go into setup or what the problem is?