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Topic: Only one headligt goes up ?

in Forum: C3 Electrical

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Only one headligt goes up ?

Posted: 6/25/09 11:28am Message 1 of 5
e_markel
Former Member
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Joined: 8/1/2007
Posts: 1
Does anyone know what may cause only one headligt to go up and down. Tried override switch and still only one goes up and down.


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Only one headligt goes up ?

Posted: 6/25/09 11:47am Message 2 of 5
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crossfire1982
Former Member
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Cramerton, NC - USA
Joined: 8/22/2006
Posts: 1094
Vette(s): black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion
First of all, check all of the hoses to make sure they are still connected to the actuator, relays, and vacuum tank, it could just be a hose off of a connection.  If all is secure, it could be either a vacuum headlight actuator, or the vacuum relay for the non-operating light.  A simple test for the defective relay is to switch the relay hoses from the non-operating light and the operating one.  Make sure you get them in the same relative locations when you swap the hoses.  Swapping one hose at a time is a good way to make sure.   If the light that previously did not operate begins to operate and the other one quits, its a relay problem.  If the same light still does not open, its going to be an actuator problem. Crossfire19822009-06-25 11:49:46


Only one headligt goes up ?

Posted: 6/27/09 9:00am Message 3 of 5
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crossfire1982
Former Member
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Cramerton, NC - USA
Joined: 8/22/2006
Posts: 1094
Vette(s): black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion
Did you find the problem with the headlight??


Only one headligt goes up ?

Posted: 6/27/09 1:19pm Message 4 of 5
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tuxblacray
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Greensburg, IN - USA
Joined: 9/24/2003
Posts: 5188
Vette(s): Previous: 1984 Silver / Charcoal Coupe, 1988 Maroon Coupe / 1989 Artic White Coupe / 2001 Speedway White Roadster / Present:1976 Stingray Black / Black, Auto, 350 slightly modified (355 hp) Luxor Wires Redline Tires. / 1989 Roadster Bright Red...
LOL.... Chip, maybe James is in the dark on his fix right now...... Hope he got it done.


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Only one headligt goes up ?

Posted: 6/27/09 6:47pm Message 5 of 5
eddie20875
Lifetime MemberLifetime Member
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Lanoka Harbor, NJ - USA
Joined: 12/21/2006
Posts: 828
Vette(s): 1975 metallic blue coupe with t-tops,L48, t/t steering, black leather interior. 1990 L98, white/red leather interior, auto,a/c
go to http://www.corvette-101.com for a free troubleshooting guide for vacuum on the headlights. explains how to check everything and is easy to follow. the best thing is it's free.


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in Forum: C3 Electrical


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