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Old Oct 9, 2011 | 05:00 PM
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Default Dash light question

When I bought my '72 several weeks ago the seller told me the dash lights didn't work (he gave me a bag of bulbs). I took it out after dark fro the first time this morning and sure enough, no dash lights when I turned on the headlights. For s&g's I twisted the headlight **** dimmer and the dash lights came on only very dim, they would go out again if I twisted them back to bright. My guess is I have a defective headlight switch or at least one that needs to be cleaned. Am I right or is there another possible solution.
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Old Oct 9, 2011 | 06:47 PM
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Headlight switch is a good candidate to start with. Also I have never taken one of these things apart that didn't need at least 2 or 3 bulbs replaced. Start with the bulbs, then do the switch
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Old Oct 9, 2011 | 07:03 PM
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Hi m,
I believe there's a rheostat in the light switch which controls the gauge light brightness. I'd think that's your problem.
Regards,
Alan
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Old Oct 9, 2011 | 08:47 PM
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Originally Posted by Alan 71
Hi m,
I believe there's a rheostat in the light switch which controls the gauge light brightness. I'd think that's your problem.
Regards,
Alan
Repairable or needs to be replaced?
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Old Oct 10, 2011 | 12:42 PM
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Originally Posted by medic1555
Repairable or needs to be replaced?
Replace.
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Old Oct 10, 2011 | 03:22 PM
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Originally Posted by Alan 71
Hi m,
I believe there's a rheostat in the light switch which controls the gauge light brightness. I'd think that's your problem.
Regards,
Alan
and there is a rheostat for sure as part of the switch. probably deteriorated and worn out. could just be dirty, but i would guess it is in need of replacement.
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Old Oct 10, 2011 | 05:26 PM
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Not repairable, the rheostat contact is riveted to a ceramic insulator,
they fail frequently, to prevent this problem, do not dim your dash lights.
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Old Oct 10, 2011 | 05:34 PM
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Originally Posted by medic1555
... My guess is I have a defective headlight switch or at least one that needs to be cleaned. Am I right or is there another possible solution.
Yes, one of those will fix dimming. I have cleaned several to fix (not C3). Electrical contact cleaner.
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Old Oct 11, 2011 | 02:39 PM
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Originally Posted by 69Vett
...to prevent this problem, do not dim your dash lights...
They die anyway from old age.
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