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Depending on how the headlight is made up, it could reduce the voltage, or reduce the number of filaments energized, or it could switch the power to different filaments which send the beam via a reflector or lens in a different direction.

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Q: How does a car dim its headlights?
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Related questions

How many feet you should dim your headlights when following a vehicle?

You should dim your headlights within 500 feet of the car in front of you. The rule of thumb is, if you can see another car, dim your lights.


How far should you be from a car to dim your headlights?

100 feet


When should you dim your headlights?

When you get 300 feet from the car coming ahead.


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

ldr sensor


What causes the headlights to dim in a 2005 trailblazer?

you might have a short in your alternator. In my car the headlights would dim when I put on the brakes or tried to use cigerette lighter to power up my phone.


How do you fix dim headlights on 2002 impala?

i have two problems my dim headlights will not come on.and when go to put in gas it will flow back word make it seem like the car is full.


Why are headlights dim in your safari van?

Usually dim headlights are caused by a poor ground connection.


How many feet away should you dim your headlights when meeting a car at night?

100 yards


When at night a driver should dim his headlights when an oncoming motor vehicle comes within?

At night a driver should dim his headlights when an oncoming motor vehicle comes within 1,000 feet. You should switch your headlights from full beam to dipped beam when a oncoming car passes. It is unsafe to leave your headlights on full beam as it blinds the driver of the oncoming car.


At night a driver should dim his headlights when an oncoming motor come within?

At night a driver should dim his headlights when an oncoming motor vehicle comes within 1,000 feet. You should switch your headlights from full beam to dipped beam when a oncoming car passes. It is unsafe to leave your headlights on full beam as it blinds the driver of the oncoming car.


At night a driver should dim his headlights when an oncoming motor vehicle comes within?

At night a driver should dim his headlights when an oncoming motor vehicle comes within 1,000 feet. You should switch your headlights from full beam to dipped beam when a oncoming car passes. It is unsafe to leave your headlights on full beam as it blinds the driver of the oncoming car.


When do you dim your headlights?

the courteous time to dim your headlights is as soon as you see another vehicle, or within one half mile.