1. Open the headlamp door by turning the headlamps on, disconnect the grey electical connector leading to the lights, this allows you to turn the lights off while you work and it leaves the linkage extended. Open the hood.
2. remove the black filler trim cover, 3 philliips screws
3. facing the front of the car, look underneath the headlamp and you will see that the whole assemby bolts to the frame of the vehicle on your left and the wheel well area in front of you.
4. remove the 3 13mm head bolts holding the headlamp frame to the car frame. (to the left, in the direction of the radiator)
5. remove 3 10mm head nuts from their mounting studs ( directly in front of you, toward the wheel)
6. the headlamp frame should now slide forward enough to clear the studs that the 10mm nuts came off, slide the frame forward about 1 inch then lift it up out of the car, being carefull not to scratch your paint on the way out.
7. unplug the motor harness from the headlamp bulbs, grey connector goes to the grey bulb socket, black to black.
8. remove the 10mm nut that holds the motor shaft to the linkage, make note of how the linkage sets in relation to the white plastic bumpers.
9. remove the 3 bolts that hold the motor to the frame by holding the bolt head with a 10mm wrench and turning the nut with a 10mm socket.
10. compare the old motor to the new one, making sure the bolt holes are in the same place, Left is different from right, and there are different designs for different years.
11. bolt the new motor to the frame.
12. reattach the motor shaft to the linkage, you will likely have to turn the plastic adjusting knob on the new motor to get things to line up, install it with the linkage fully extended, maybe 1mm short of contacting the white bump stop.
13 reinstall the frame and plug the harness back in.
14 turn the headlamps on and off several times to test it
15 stand back and admire your handywork..
It is possible to do this with the headlamp frame still in the car, but i find it difficult.