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C3 Corvette Headlight

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Old Aug 22, 2023 | 12:42 PM
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Ozman GA's Avatar
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From: McDonough, GA
Default C3 Corvette Headlight

Hello from Atlanta, Georgia. I apologize if I am not posting in the correct thread. I am not good with the computers.
I own a 1980 C3 corvette. Last year I replaced the headlight actuators, hoses, relays, switch and the override switch. Lights were working really good till last night. The right side light won't come up. I pull the override and only the left came up. The right side wanted to stay down even when I forced it by pushing the lever from under the bumper. All the hoses seem to be attached. What am I overlooking?
Thank you for any and all advice.
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Old Aug 22, 2023 | 12:55 PM
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Pull a vacuum on the right side relay and right side actuator to test these parts. A lot of people have had the reproduction parts fail in a matter of months.
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Old Aug 22, 2023 | 02:38 PM
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From: Smyrna, TN
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I agree with 70s...Import parts seem to have a high fail rate...
But sometimes the issue is not vacuum related...Sometimes it is just age and friction.
First thing I like to do is a quick test to see if the headlights will pop up on the actuator alone...
Remove the hose from your headlight relay that goes to the rear of the actuator and blow into it...
Headlight should pop up easily...If not. try some PB Blaster / WD40 on the linkage.
If it still won't pop up. you probably have a bad actuator.
If it does pop up, probably a bad relay...

BTW I live in Smyrna TN but I am working on a project in Stockbridge GA...

Pull the red hose from the relay and blow into the hose...

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Old Aug 22, 2023 | 06:13 PM
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Here's a good 'how-to' for testing each component:
http://www.corvette-101.com/vacuum.htm
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