head unit

Yeah back when I first bought my 1990 accord it already had a cheap cd player in it. Last night I took it out so i could put a newer and better cd player in my car but the guys that put the first one in cut the plug off the wires and the colors don't match up with the new cd player. I need to know what color goes to what....... PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!