Help! 1988 driver side headlight

[yellow trouble]

Ok took her out tonight ran great. Went to turn on headlights and about 20 minutes later the driver side started to close. Pulled over turned lights on and they both worked. But the driver side would start to close by its self.Light would stay on.Is there a vac. line some where to check or are they elec. its after 11pm so i didnt check to much yet.Any help will help thanks

 

[6 Shooter]

Hope this helps...

1988 Vette Headlight Problem - Google

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