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Topic: headlight problem

in Forum: C4 Electrical


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headlight problem (1/5)
 9/16/16 3:42pm
hobbyrep1
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redington shores, FL - USA

Vette(s):
1985 C-4


Joined: 9/16/2016
Posts: 2

My left headlight stayed up a half dozen times and them would return to the closed position after a short time. Now the headlight is in the up position for about two weeks now and still lights up when switch on. Is this a gear problem or a headlight motor problem?
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Re: headlight problem (2/5)
 9/16/16 4:07pm
Black Shark
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Vette(s):
Black 1979 L-82 Black 1996 LT1 Black 1999 Coupe


Joined: 3/20/2009
Posts: 611

Is the motor running continuously?
Did you ohm out the switch in the ON/OFF positions?
Is there power at the motor?
Re: headlight problem (3/5)
 9/17/16 1:10am
Hot Rod Roy
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Mission Viejo, CA - USA

Vette(s):
Yellow '84 Coupe


Joined: 3/18/2015
Posts: 74

If this is on your '85, the problem is probably dirty limit switches inside the headlight motor.   It's a fairly straightforward fix, after you remove the headlight motor.   The motor armature shifts up or down in its bearings when the headlight door hits its limit stops, either open or closed.   This shift of the armature actuates the limit switches.   Clean the contacts and apply a little light weight white grease on the motor bearings to solve this problem.




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Re: headlight problem (4/5)
 9/21/16 2:29pm
russ1953
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Sebring, FL - USA

Vette(s):
1987 Red Roadster Automatic (SOLD 4/4/23) it will be missed. 2004 Yellow Coupe 6 speed 2014 Red Convertible Z51 3LT


Joined: 7/16/2016
Posts: 18

I cleaned the limit switches as my rt headlight was also sticking in the open position, It stopped the problem.
but I had to replace the gears in the left headlight, as they were visibly worn and slipped, so if you are in cleaning the contacts already replace the plastic gears with the brass replacements, then you are done with the worries.
Re: headlight problem (5/5)
 9/21/16 4:34pm
hobbyrep1
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redington shores, FL - USA

Vette(s):
1985 C-4


Joined: 9/16/2016
Posts: 2

Thank you for the information as will try your instructions
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