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Discussion Starter · #1 ·
I have started to notice on my '66 Malibu that at night occasionally as I am driving, all the lights get brighter for just a split second then back to normal. It doesn't do it hitting bumps. Does on smooth roads. Car has HEI distributor. What could it be?
Thanks!
 

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This is a known problem with chevelles. Usually it means you have bad grounds. I put new ground straps on my cluster and installed a headlight relay on mine and that cured my problem on my 66. You also might have a faulty regulator. Have someone perform a charging system inspection.
 

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Mine did this, and it was the voltage regulator. If you have the original regulator it could probably use a change. I think it is cheap insurance for $11 at a parts store.
 
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