I have a 95 Blazer with power mirrors, I have a power set from a 2000 that I'd like to use, but the plugs are totally different. My 95 has 4 wires and the 2000 has 5(if I remember right). The extra wire I'm assuming is for the heated mirrors. Since the wires are different colors for the mirrors, would anyone know what colors are for what? And once I find which wire is for the heated option, could I just hook that to the rear window defroster? So when I turn the defroster on the mirrors will activate.