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I am looking for a channel selector or someone who can build one for me. This is what I want to do. I need a 3 or 4 channel video selector that switches from one channel to the next and loops back to channel 1 and so on. I am wanting to hook up 3 or 4 cctv cameras to this box and flip from one camera to the next by a single button. (not individual buttons like a quad or something. Radio shack has one they sell however I need the control button to be in a different place than the box is in. The installation is for a boat, and I want the person to be able to flip through his cameras from a single push button on the dash. Any help would be great. Thanks Todd P.S. i need 43 or 4 inputs and only 1 output as we only need to view 1 at a time