lemme get my service stuff up, It has to do with the door trigger wires, from the GEM.
Ok, since my manuals aren't cooperating with me, I can only get a little bit of what I wanted up:
In that photo, you'll see on the bottom to the right of the middle, 2 wires (one GY/RD, one YE/BK) I believe thats where I got mine off of, I don't know if the 2002's colors got changed or not. That's off of C221, behind the radio, the biggest connector going into the GEM.
Take this info at your own risk, and check with others to see if its correct.