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If you find your headlight bulbs are blowing on a regular basis, then there could be several reasons why it is happening and by identifying what the cause of the problem is, you will save yourself the cost off continually buying replacement bulbs, and the hassle of needing to constantly change them.
Are You Using Your Headlight Bulbs For Long Periods?
The typical expected lifespan of a standard halogen headlight bulb is around 350 to 400 hours, so if you are driving a lot during the long winter nights or even if you keep your headlights on during the day it is possible that your bulbs could only last 2 to 3 months.
Its important to note that if you have fitted upgrade xenon bulbs they will normally last only around 200 hours, because they have been in effect tweaked to improve their light output. For drivers who do use their headlight bulbs for long periods you can reduce the amount of time between changes by fitting long life headlight bulbs.
These tougher car bulbs contain heavy duty reinforced components and so last normally three times longer than standard halogen bulbs, whilst still offering the same lighting performance as normal halogen bulbs.
Are You Touching The Glass Bulb When You Change Them?
If you touch the glass section of the headlight bulb with bare hands, the natural oils within your skin will leave a small residue of grease behind. Once the halogen bulb is illuminated this oil patch will create a hotspot within the bulb and lead to it failing early. Therefore it is a good idea to wear latex gloves when installing new halogen bulbs.
Are The Bulbs Getting Wet Or Suffering Excess Vibration?
Whilst most of the major bulb manufacturers used toughened glass in the construction of their headlight bulbs, they are still vulnerable to the effects of thermal shock. This means that if they come into contact with water that has leaked into the headlight unit, then it is very likely that the bulb will be damaged. It is also important to ensure the bulb is securely installed as otherwise the extra jolts and bumps it will be subjected to can damage the filament
Is The Car’s Electrical System Working Correctly?
When installing the bulbs make sure that the electrical connectors from the lights power lead are firmly joined to the metal connectors on the base of the headlight bulbs, otherwise it is easy to get a short circuit and blow the bulb.
It is also important to check that the alternator is not overcharging the battery and delivering more voltage than the bulb is designed for. Typically the maximum voltage of a bulb is around 13.2 volts.
Are You Buying Good Quality Headlight Bulbs?
Whilst cheaper car bulbs may seem like a good idea, they normally lack the high quality and precision components used by the leading manufactures like Osram and Philips, and will not last as long. High quality bulbs will be marked with the E1 mark, which indicates they have undergone the most rigorous testing and quality standards.
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