I found a controller at a junk shop for $5, and figured I would mod it onto a console. For the longest time I couldn't figure out how to add it to a console because I didn't know which cable was which. Now I figured it out:
Orange: +12v (connects to a 7808 regulator so the voltage range should be greater and lesser than 12.)
Black: Ground
Brown: Ground
Red: Right Audio input
White: Left Audio input
yellow: Composite video input
Now I can finally build it into something. Maybe my new Sega Genesis 3, since it will fit right on the face of it and hopefully can share the same +10v power supply!