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'77 300D Auto
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10 Posts
Discussion Starter #1
77 300D... battery voltage doesn't go above 12.6v at the battery... light flicker like crazy though... bright and dim.... at the fusebox it fluctuates between 9 and 16v.... here's the catch: with the car OFF it still fluctuates between 9-12... I'm stumped.... HELP!
 

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1979 280CE
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6,118 Posts
check the voltage regulator on the alternator
 

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1980 280CE; 1982 300CD
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1,226 Posts
Try taking out fuses, one at a time, until you find the one powering the component causing your whole system to flicker. That may narrow it down.

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