Why do Bright lights work but dims do not?

Headlight Fuse or Relay If a headlight fuse blows, it could cause the headlights to stop working. Most headlight systems are also designed with a relay that switches the power between low beam and high beam headlights. If this relay goes bad, it could allow power to the high beams, but not the low beams.

1. Why do my high beams work but not my headlights?
2. Why do only my high beams work?
3. Are brights and dims the same bulb?
4. Do high beams and low beams use the same bulb?
5. How do I know if my headlight relay is bad?
6. What causes both headlights to stop working?
7. What causes dim headlights?
8. Can I drive with one headlight?
9. Can I drive with high beams on?
10. Are high beams your brights?
11. How do car brights work?
12. Is H11 high or low beam?
13. What is the difference between 9005 and 9006?
14. What does overdrive your headlights mean?
15. When driving in fog what should you do?

Why do my high beams work but not my headlights?

Like all electrical systems, the headlights in your vehicle have a fuse in the circuit to prevent too much electricity from reaching the bulb. There will also be a headlight relay that switches power from the low beams to the high beams. If the fuse goes bad, you likely won't have any headlights at all.

Why do only my high beams work?

Most headlight failures that are limited to just high or low beams are related to a relay or the high beam control switch. Headlights work but seem dim. The cause: Foggy lenses, worn out bulbs, or a charging system issue. The fix: Clean the lenses, replace the bulbs, or repair the charging system.

Are brights and dims the same bulb?

Most modern vehicles have a single bulb with two filaments. ... Some cars (mostly higher-end vehicles or performance vehicles) do have separate bulbs for their high and low beams. Generally, you'll have a standard halogen bulb for low beams, and then an HID bulb for your high beams. These are not interchangeable.

Do high beams and low beams use the same bulb?

High beam and low beam are two different beams of light, with 2 distinct functions. In most cars, each beam has a separate, single-beam bulb for producing the light. In other cases, one bulb, with a dual-filament, can produce both the low and high beams through a single bulb.

How do I know if my headlight relay is bad?

Headlights Don't Turn On

The most common sign of a bad headlight relay is headlights that don't work. A headlight relay will typically fail in the open position, preventing voltage from reaching the headlights. If the low beam relay fails, the low beams won't work.

What causes both headlights to stop working?

Solution: If both headlights aren't working, it's unlikely that a bulb is at fault. The likely cause is a fuse, headlight relay, headlight switch, dimmer switch or a wiring fault. ... Consult your owner's manual to locate the main fuse for the headlight circuit and replace that fuse with one having the same amp rating.

What causes dim headlights?

Over time, your lenses can become oxidized—leading to a foggy, cloudy, or yellowed lens appearance. The opaque shade caused by oxidation does not let as much light pass through as clear lenses. This will leave your headlights looking dim, even if you have brand-new bulbs.

Can I drive with one headlight?

Driving with one headlight would be possible, but it is still illegal since the driver may get into a car accident which may also cause a serious collision, affecting other drivers and people. So, as per the consensus and rule of the states, driving with only one working headlight is prohibited.

Can I drive with high beams on?

While it is not against the law if you drive around with your high beams on as long as you follow the required distance and proper dimming of light or using low beams (low beam lights), improper high beam headlight usage comes with penalties.

Are high beams your brights?

High beams are sometimes referred to as 'brights' or 'full beams'. The light beam for high beams is angled upwards in order to illuminate a surface area above and beyond the light of the low beams. High beams have a long-range focus. ... Driving with your high beams can blind oncoming traffic, which can be very dangerous.

How do car brights work?

How High Beams Work and When to Use Them. The difference between the low beam headlights and the high beam headlights is the distribution of the light. When the low beams are on, the light is positioned forward and down so as to light the roadway but not affect the drivers who are driving in the opposite direction.

Is H11 high or low beam?

The H11 is a single low beam light, whereas the 9005 is high beam light with a high illumination capability.

What is the difference between 9005 and 9006?

The 9005 is the High Beam and the 9006 is the Low Beam. You'll need both of them for your car. 3 of 6 found this helpful.

What does overdrive your headlights mean?

What Does It Mean to "Overdrive Your Headlights"? ... It is often called 'overdriving your headlights' when a driver's visibility is limited due to fog or darkness, but the driver still drives at a speed which does not allow them the ability to stop in time to avoid obstacles in the road.

When driving in fog what should you do?

When driving in fog, you should use your:

High beams. Low beams. Explanation It is best to postpone driving until a fog clears. However, if you must drive in the fog, you should do so slowly and use your windshield wipers and low beam headlights.