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I don't know what kind of car you have, but if the headlights work in either the dim or bright mode, but not both, I would suspect the dimmer switch. If they don't work at all, the headlight switch is probably the culpret, unless of course both bulbs are burned out, which I have seen on one occassion.

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โˆ™ 2004-08-03 21:52:12
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Q: What are the possible reasons why headlamps will not work?
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