LED Lights have not been found, in any studies, to cause cancer. The main cause of cancer in any light source seems to come from exposure to UV radiation and hazardous chemicals that may be found in incandescent and fluorescent light bulbs.

One of the first symptoms of a bad or failing headlight bulb is dim headlights. Over time headlight bulbs can wear out and begin to shine noticeably dimmer than when they were new. A dim headlight will not provide proper illumination and is also usually a sign that the bulb is approaching the end of its service life.

With incandescent and halogen bulbs you can often see if the filament has blown by holding it up to the light to see if the filament has blown. Sometimes if nothing obvious can be seen I will do a continuity check with a multimeter which will show open circuit if the filament is blown.

Reasons Why Your Car Bulbs Have Blown The first thing to ensure is that you buy quality car bulbs. Some low-quality bulbs are so weak that any surge of power can damage them. A loose connection in the bulb holder can also cause bulbs to blow. This is because the circuit is not completed as tightly as it should be.

The most common reason for faulty low-beam lights is a blown fuse. Check for melted wires leading to any of the fuses, and replace said fuses if necessary. Use a voltmeter to make sure that power is actually running to your headlight. If not, then the problem is in your wiring.

Loose Connections A loose connection in the lamp holder can also cause the light bulbs to blow. When the circuit is not tightly completed, it makes the electricity jump and not flow. When the power jumps, it creates more heat in the fitting than recommended for by the bulb to handle forcing it to blow.

The first thing you want to check is that you are wiping any oils from your hands off of the bulb. If you are handling the bulbs with your bare hands, the oils transfer to the glass, and the heating up of the oils will burn out the bulb. Also make sure the bulb is being placed in correctly and is not loose.

It is possible that the fuse is blown and it needs to be replaced. The wiring may be damaged over a period of time. It can cost you $100 per hour.

Symptoms of a Bad or Failing Headlight Closure Relay

• Headlight doors don’t open. One of the first symptoms of a failed headlight closure relay is headlight doors that don’t open.
• Headlight doors stuck open.
• Headlight doors operate erratically and open or close on their own.

If your headlights suddenly go out, do the following:

1. First, try your dimmer switch. Often that will turn them back on again.
2. Try the headlight switch a few times.
3. Pull off the road as soon as you can and leave your hazard lights on so that other cars can see you.

A cop is more likely to pull you over if you drive with your high beams/brights on. If you do get pulled over for a headlight being out, you will either receive a warning or a ‘fix-it’ ticket.

The Best in Auto Repair The average cost for headlight bulb replacement is between $119 and $130. Labor costs are estimated between $41 and $51 while parts are priced at $79. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

Getting Pulled Over for a Violation If you’re driving around in a vehicle that has only one working headlight, chances are an officer will stop you. This applies even if you are driving your car with two working parking lights illuminating the road. You can receive a citation for violating the law.

In most states, it is required by law that headlights must be used from sunset to sunrise. It’s also law that a motor vehicle (unless it’s a motorcycle) must have two headlights. Therefore, if you have a headlight burned out, it is possible (and likely even probable) that you’ll get pulled over.