http://www.968forums.com/topic/8644-new-headlight-issues/?hl=%2Breplace+%2Bheadlight#entry87652 (Post #11)
1) raise the lights (so they'll stay up)
2) turn off ignition
3) put headlight to "service" position
4) Disconnect heim joints and remove bar (chances are, the gunky lube on these is contributing to, if not causing, your problem.)
5) Remove center bolt that holds the rotating lever arm to the motor.
6) Remove the three bolts that hold the motor to the assembly.
7) Pull the wire keepers out of their holes (I wish there was a way to do this without breaking them. Mine were so old and brittle I had no success at it. I'm still looking for a source to replace them.)
8) Unplug the wire loom and remove the motor through the rear access.