Probably a year ago I had to replace on of my headlight motors because it literally took a dump on itself, it also fried the little control module in front of the driver's side wheel. I got one motor and the control module from local corvette salvage shop. I don't remember now which one I ended up replacing, but ever since then my driver's side has been just a little bit slower to open up. We're talking not even really half a second, but it's noticable enough as you see the light path come up from the driver's side just a split second later.

Not so long ago the bushings in one of the headlight gears completely went to crap, so I replaced the bushings on both sides. No dice, the driver's side is still slightly slower. Slower might not really be a good word, but rather delayed. The speed seems the same, but it's like it takes it more time to get started, like there is more slack. I know when I replaced the bushing I had to adjust a screw on the passenger side for it to work properly, something about a tension on the worm gear or something strange. I don't remember exactly and I don't still have the instructions.

Is there anything I can do to try and equalize this? Maybe if it's in that tension screw, maybe one has more preload than another or something like that? Sound possible or does it sound like I've sucked in too many exhaust fumes? I'm sure this is a fairly common problem, just curious if anybody has ever come up with a solution.

I suppose I could just get two new headlight motors and hope they are the same, but I really don't have the money for something so trivial.

 

On my 85 they both come up together, but you might try that screw that you use to manually open them up, not sure if a 92 has one though, good luck :seeya

 

If you haven't already, try turning the manual **** a turn or two, one way or the other. It does make a difference in how quickly the headlight opens.

 

I am not sure about this, I had my one of my lights manually opened about halfway to change the bulb and i turned the head light on just to see if the new bulb would light up. Well I didn't think about it, when I did it and when I turned the light on the headlight opend up to its normal position. :eek: I thought I had messed something up but it turns out that it was a quick way of putting the lights back to the closed position after changing headlights. I use to close them manually after changing lights before I would operate them, but now I see that you don't have too. Even after all this both of my lights operate together at the same time. SO adjusting the time, I don't think it makes any difference :nono:

 

sounds like your left side relay is getting carbon buildup on the contacts...you can take the guts out of the housing and clean them with a nail file if you don't want to spend 13 bucks for a new one.....as for synchronizing the two lights... it won't happen unless you drive both motors off a single relay and i'm not sure a stock relay can handle the current requirements...but you may be able to find a suitable 30 amp relay out of an allied or newark catalog

hope this helps :chevy

 

There is no easy way to synch your headlights as they are running open loop. That is, the motors run at a speed determined by the individual motor characteristics and their frictional load, neither of which is closely controlled. The important thing is that your headlights come up and go down. Now if you want to put some feedback into the headlight motor system, then you could insure that they come up and go down at the same speed and together. IMHO it isn't worth it.

 

They do have the ****. Adjusting the **** will change the time the play in the system is gone and the motor grabs. I'd try this first.