Nathan, et al., I remember when I was cleaning up the rotating mechanisms for my headlights last month, the locking and unlocking latches, where the micro-switches are activiated to turn on and off the lights, were not easily operated by hand and required a lot of pressure to actuate. Not wanting to say anything negative, so I just checked them again and it takes a lot of force to get the mechanism locked and unlocked. I am not sure a linear actuator will have enough speed and power to operate the headlights with out some mods to the locking/unlocking latches. The short throw of the manual handle and the gear ratio of the mechanism, plus the weight of the rotating mass, I believe, is what locks and unlocks the headights. I noticed that there are gear teeth cut down to allow the rotating mass to disengage at each end of the travel to allow the mass to continue rotating and go into the locked position. Again I don't want to throw a wet towel on this idea, but I think more research should be undertaken before the bucks are spent on something that may not work. JMTCW.
Ron