Wiring harness on my 94 Ranger

Question

I have a 94 Ford Ranger "splash"(cool truck really)that use to have a Pioneer KEHsomething SuperTuner. Someone thought they needed it more than me and took it out.Luckily the left the wire harness' intact. Problem: I bought a wire harness "kit" that had the black connector and the grey connector to put in a lesser Sanyo stereo in. Seems the kit I got had the two connectors reverse of what the truck's is. Now I need to know what color wire does what on the power/ground side of the connector setup. Of course my handy Chilton's is of no use in that dept. Please help as I aM GOING CRAZY LISTENING TO ALL THE SOUNDS MY TRUCK MAKES@!!!!!!