Picture #33: Now this is the time to check the motor. I've use my cordless drill 12 volt battery. You shouldn't see any sparks or smoke. Reverse the polarity to see is everything is ok. Picture #34: Here again the tip of the motor shaft. Insert it in the white helicoidal gear.
Picture #35: Insert the gear in his hole and push down the motor. Picture #36: It will be a bit hard to clip the motor in place. Just put a screwdriver at the back of the motor and pry the plastic casing and get the motor in. Once in there, it won't move. Here we see the two clips retaining the motor.
Picture #37: Here two close-up of the small white gear. Note the assymetrical form of the shaft. Picture #38: Here picture #21. Put back the gears. I have to admit it, I have no idea how the small gear move. The orange gear doesn't touch the small gear. I have tried different height but it seem to be at is place.
Picture #39: Here with the metal back on and the plastic guide on. Picture #40: You have two options for testing, one with the headlight wiper assembly open (at home) or close (at the car). At the connector, you have three contacts (red+, black- and yellow+). First connect the black and red wires. As you connect the red, the wiper arm may move about two times then stop at the parking position. With the two wires connected take a third one, from the + , and touch for a moment the yellow wire and remove. The wiper arm will move two times then stop at the parking position. Do that a few times. Put the motor in the car, plug it, put back the headlight and connect the wiper arm (in his park position) and windshield wiper hose.

I did the test at home first. I had to screw and unscrew many time the wiper arm while testing. Finally a simpler way is to screw the wiper arm once and to push the wiper arm shaft (with the plastic back open) so it disengage from the metal gear. Then you can turn the shaft the way you want and put it back in the park position.
Picture #41: Et voilà.. It wasn't difficult but it was a bit challenging trying to understand the way it work. A few days later, my wiper wasn't exactly at the park position (an inch and an half up) but when I hit the washing button, it parked perfectly. To be honest, I don't know for sure what was wrong. Sure that a smoking and sparking motor is not a sign of good health but I feel that the small gear might be also at cause. Anyway, a brand new wiper assembly is $450 cnd (2004) at the dealer. Add an hour ($80/hr) of labor, add taxes and it comes close to $600 (for one side!)