Yes, you should be able to find the diagram with a forum or google search. It's a RCA connector (red white yellow). I made one, and it works kind of but somewhat flawed. Fullscreen goes beyond the screen edges and some of the emulators I tried only displayed in no scaling mode, so they weren't fullscreen, but more like half. The biggest downside though is, I had no power source I could plug in while running on the tv and no gamepad port to use, so it's kind of useless unless you have a 50 foot RCA cable and don't mind the imperfect screen layouts.
