I searched a bunch yesterday and found tons of places to see the wiring diagram for the wires coming to the back of the head unit but they dont match the colors of the wires in the doors. I guess my first question would be, does it matter what wire you hook to the + and -? I always thought it did but I tried them both ways and sound came out. I thought I heard a difference but not enough to detirmine which way was better. The stock speakers dont have any indication of which wire is positive and negative, so I was at a loss there. I know the wires in the driver side front door are blue w/white strip and blue w/red stripe. The wires in the passenger side are blue w/black stripe and white, i think. I havent looked at the back doors enough to remember what they are. I would like to know that I have hooked them up properly. Can anyone help with this? I can verify the wire colors and post back later if I need to. Thanks in advance.