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headlamp problem #140098 03/30/09 02:45 PM
Joined: Mar 2009 Posts: 1 south carolina Gener OP Grease Monkey
OP Gener Grease Monkey Joined: Mar 2009 Posts: 1 south carolina	My 77 vette's headlamps won't close. I have had the car for about 15 years and never had a problem with headlamps. Went to check the headlamp vacumn switch inside car and found that it has been bypassed by the previous owner but, as the lamps have worked for 15 years, that should not be the problem. Where do I start? Are the headlamps fused? The manual doesn't show any fuse. Any help would be greatly appreciated. Gene

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Re: headlamp problem Gener #140103 03/30/09 04:41 PM
Joined: Sep 2006 Posts: 731 NW Arkansas, USA Dads 31 Oil Can Mechanic
Dads 31 Oil Can Mechanic Joined: Sep 2006 Posts: 731 NW Arkansas, USA	sounds like it's time to trace vacuum lines. Chevrolet Valve In Head, Ahead In Value

Re: headlamp problem Gener #140683 04/09/09 07:57 PM
Joined: Dec 2007 Posts: 50 wisconsin brewcruiser Shade Tree Mechanic
brewcruiser Shade Tree Mechanic Joined: Dec 2007 Posts: 50 wisconsin	the headlites are actuated by a vacuum actuator which works both to open and close the lamps, depending on which side the vacuum is applied to. There is a vacuum control that switches the vacuum from one side to the other and is controlled by the headlamp switch. You may have lost vacuum to the switch or the switch is defective. I don't see how the switch could be bypassed and still allow the lamps to function.

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