I tried to extend the component cable that I ordered with my Sharp projector (Instead of dragging it out each time, I ceiling mounted it, but the cable was then 10' too short). I tried this by purchasing an RCA coupler, and a 12' component video from Radio Shack. The result was shades of purple, pink and alternating blue traveling up and down the screen. I know it's not the projector or the DVD player, because when using the S-Video connect, it worked fine. Where did I go wrong???