OEM Color Wiring Diagram for Stereo
 

I have a 92 Mustang GT convertible that had a stock Ford cassette player with a Ford EQ attached to the bottom of it. I went to replace these units with a aftermarket radio, but I haven't been able to locate the correct wire harness to plug into it. So I am to the point that I have to hard wire it into the car and I need diagram of the OEM speaker wiring (colors).

Anyone have any ideas or suggestions?