2002 Ford Focus Stereo Wiring Diagram Please

I have searched all over and have been unable to locate a wiring (color-coding) diagram for my 2002 Ford Focus ZX-5. I removed the left rear doorpanel to get a starting point. The diagram at installdr.com is incorrect, because the two wires hooked up to my left rear door speaker are white witha purple stripe and grey with a white stripe, so with that said can someoneplease direct me to the correct stereo diagram for my 2002 Ford focus zx-5.btw: if it matters i have the factory in-dash six disc changer. Thanks for anyhelp. Brian

Update,  Removing door panels does no good when Ford uses the same wires on BOTH SIDES!!!!!!! GRRRRRRR.  Anyway I finally just did it the old fashioned way. I removed the speaker harness from the back of my radioexposing the pins in the back of my head unit (which by the way is model 6006 ) and took a home stereo speaker and proceeded to touch the wiresfrom the speaker to the speaker pins on the back of the head unit. I set thefade all the way to rear then the balance all the way right and then touched pins until the speaker worked thus giving me the correct wires for the rightrear speaker, continued doing this until i had each speakers correct wiresfigured out, then compared my wires to other ford vehicles to figure outwhich one is positive and which is negative. Hopefully I haven't confusedanyone that came here looking for an answer. Here's what I ended up withRight Rear +         solid grey wireRight Rear -          solid white wireLeft Rear +            grey wire w/ white stripeLeft rear -               white wire w/ purple stripeI know for a fact that these are thecorrect wires but if someone thinksthat the positive and negatives are reversed please let me know, I had togo by other ford wiring diagrams to come to this conclusion.