That's funny, cause I have the same problem. Someone on here awhile ago, when I was wondering about the wires, posted a link to a site with all the wires and what each was. I have been trying to find the site but have had no luck.
My stereo is still with out aconstant 12v. Everytime I get into the Trooper and turn on the stereo I have to redo all my presets, it's a pain in the ***, but I have yet to have the chance to mess with the wires. If you don't find the help you are looking for on here, which I am sure we both will, I will try it out as soon as I get a chance. If you figure it out please let me know. Thanks and good luck.