i'm having trouble finding color coding for my mercury cougar i found a diagram but shows the stereo constant wire is green and yellow but there is no green and yellow in my cougar stereo harness and also has the cruise control wires tied in to the stereo harness and the cruise constant and switched are backwards please help thanks

I'm having trouble finding color coding for my Mercury Cougar. I found a diagram but it shows the stereo constant power wire is green and yellow, but there is no green and yellow in my Cougar stereo harness. It also has the cruise control wires tied in to the stereo harness, as well as the cruise constant power and switched power are backwards. Please help. Thanks