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 door
panel 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 with
a purple stripe and grey with a white stripe, so with that said can someone
please 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 any
help. 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 radio
exposing 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 wires
from the speaker to the speaker pins on the back of the head unit. I set the
fade 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 right
rear speaker, continued doing this until i had each speakers correct wires
figured out, then compared my wires to other ford vehicles to figure out
which one is positive and which is negative. Hopefully I haven't confused
anyone that came here looking for an answer. Here's what I ended up with

Right Rear +         solid grey wire
Right Rear -          solid white wire
Left Rear +            grey wire w/ white stripe
Left rear -               white wire w/ purple stripe

I know for a fact that these are thecorrect wires but if someone thinks
that the positive and negatives are reversed please let me know, I had to
go by other ford wiring diagrams to come to this conclusion.