sterio wiring diagram/colors

Help I have a1981 mercury cougar that has been turned into a sleeper but somebody stole the original radio out of it , go figure, now i can't find a wireing diagram to give me the color codes so that I can put in an aftermarket sterio  Thanks

I don't know for sure but this might work check if you have this wire combination and put a meter on the wires carrying current to be sure:Constant 12V+               Light Green Switched 12V+               Yellow/Black Ground                      Chassis Illumination               Blue/Red Dimmer                      n/a Antenna Trigger             ORANGE / Blue Left Front (+)              Green Left Front (-)              BLACK/ White Right Front (+)             WHITE/ Red Right Front (-)             BLACK/ White Left Rear (+)               Pink/Red Left Rear (-)               Pink/Blue Right Rear (+)              Pink/Blue Right Rear (-)              GREEN/ Red

Thanks rmn6 will give it a shot, even trying to find the manual or a chiltons has been next to impossible E