I need the wiring on an old Pioneer KE-2600QR pullout stereo, I am putting it in my golf cart, and I don't think there is a constant power wire. I have a red, black, blue, 2 grey, 2 green, 2 brown and the 2 rca cable hook-ups. I also only have 2 speakers in the golf cart so I want to use the rear speaker wires. Can anyone help me?