updated: forgot to talk about the ground
What are you trying to do? Make a A/v output jack if so, thats not hard.
What you do is before you hook up the composite, right, and left audio to the PS one screen break into into two seperate wires. Add one to the correct pin of the screen and then solder one wire onto a output jack. Then take the ground break it into four wires one to the screen and the other three, one to each of the output jacks.
I know this for a fact and have a perfect A/V switch or use to.