1989 corvette headlights intermittently open - 1989 Chevrolet Corvette

C4 Corvette 1984-1987 CNC Machined Headlight Gears - Large/Small ' Corvette Mods

Does your cluster intensity decreases when you hide the photocell? The photocell aperture is on the upper left corner of the dash cluster. If it does not, this gentleman can repair it for you or provide the repair kit: http://www.batee.com/corvette/dcrg/photocell/

Are you looking for a wiring diagram or a head light switch with a vacuum diaphragm to operate the light covers or to bring up your lights when you turn them on,like a corvette,if like a corvette,I had a 1971 corvette that didn't open and I used the vacuum parts on the light switch off of a 1968 Pontiac GTO,the light switch was the same as the corvette

Sounds like a open wire. You can always run one from the other side

If you need further help, I’m available over the phone at https://www.6ya.com/expert/edward_020b3320326d263d

1st I'll need to know what the problem is with them exactly, won't flip up, headlight bulbs are not turning on but light carriages do flip into the up position?? What? What work have you done if any to try and repair whatever this problem is with the headlights? Throw me a bone here, I own a 1996 C4 now and have rebuilt another (84) from a rolling wreak. I know thwe problems wit the lights.

Corvettes have a gear box on that motor. It has plastic gears in it. You probably have a gear stripped in that gear box, that lets the motor spin free. You can get repair parts to repair it, or replace the whole motor and gear box. Its an easy fix if your handy. Read all the instructions before you start.

this is a common problem mine does it the gears in the motor are stripped look on ebay a u can buy replacment gears with instructions.

I had to rebuild the headlight motor gears on my 89 last year. There is a plastic gear in the headlight assembly that has little plastic "barrels" in it for tension. These little bushings disentigrate over a short period of time. both of mine went out about a month apart. They are called the Delrin Bushings and sell for 8.99 a set (MAdirect). sometimes the plastic gear get's damaged, so you may want a kit. I used a new plastic set don't recall how much, they also sell brass for $59 each side. I figure the plastic lasted 20 years last time. It is not for the novice, but it wasn't too hard if you have the right tools. second side took me an hour. good instructions.

There is an adjustment knob next to the headlight bucket, remove the cover, should be a hard molded piece that looks like it would cap a funky looking A-1 steak sauce bottle. Adjust the gear by twisting it.

Hi jim birks,
Here is a link to step by step instructions for bushing/gear replacement.
http://www.corvettemagazine.com/2002/february/c4lights/light1.asp

It appears to be quite a large job but Im sure you can handle it.
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee