I'm trying to put a new deck in my car, after I took the old deck out I saw the wiring harnesses. They are different from the installation harness I bought and I can't find and wiring diagram that matches it. It has 2 yellow/black wires going in to one spot and 2 other wires a blue/red and a orange/blue both going in to seperate spots. The one of the yellow black wires goes back to another harness along with the red/blue wire. The speaker wires are not the problem just the others. I do have the amp pull switch in my car. Any idea on which is which, and how to hook up the new stereo?