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Problem with the charging system. Altenator, Battery, etc.. (may even be a loose belt causing the alternator not to spin fast enough to charge the battery).

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Q: Why does your headlights keep switching from bright to dim?
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When approaching a vehicle from the rear at night within how many feet must you dim your bright headlights?

according to Florida handsbook, you must dim your bright headlights within 300 feet of the vehicle ahead.


What Sensors we can use for automatic dim and bright of a car headlights?

ldr sensor


Why will your bright headlight indicator alternate properly between bright and dim but the headlights themselves stay on dim?

You need to check your dimmer switch it is bad or not plugged in correctly.


Why will headlights work when on bright but not on dim on a 1990 Ford Crown Victoria?

You've got a bad headlight switch and need to replace it, that's the switch you pull in the dash to turn the lights on. That's why the headlights only work on bright but not dim.


With how many feet of an oncoming vehicle should you dim your bright headlights?

If you can see the oncoming vehicle then he can see you. Dim your lights at that time.


Why would the headlights of a 1988 Honda LXI be weak on dim and the bright lights only work on the right side?

A bad ground wire will cause dim headlights, or will cause lights not to work.


Why does your headlights work on dim but not on bright on your 1993 Mercury Tracer?

Perhaps the part of the headlight bulb has burned out.


Within how many feet of an oncoming vehice should you dim your bright headlights?

Here in California, by law it's 500 feet (a football field-and-a-half), but be kind and dim your bright lights well before that.


Why would one side of the headlights go out when you turn on your bright lights?

Headlights have two filaments, one for dim, one for bright. From your description it appears that one of the high beam filaments is burned out. Replace the bulb.


What could be wrong if you have already checked fuses and bulbs and still can't figure out why the headlights go out on your 1993 Ford pickup when switching from dim to bright?

Have you checked to see if the brights are not just burnt out? Rarely do they both go at the same time, but it is possible.


When approaching another vehicle from the rear at night within how many feet should you dim your bright headlights?

at least 2m


What would cause dashboard and headlights to get bright and dim on 2005 dodge magnum?

A bad battery or faulty battery connection.