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anuragthakur   , 21

from Mill River



Has it ever happened to you that you have just changed your car’s Headlight bulb and it got blown off. Or does it happen in your car on regular basis  that you need to change your cars bulb very frequently. And the thought of having some serious problem in your car, has ever crossed your mind. If so than just relax, as this is not the result of any major problem. This is an common problem and have been in cars from ages.

Lets look into the reasons that causes this problem of blowing off of the bulbs frequently in car :-


1.) Faulty Voltage / Alternator Regulator ( Also know as Voltage Stabilizer) :-

The voltage regulator allows the parts of the car to use maximum amount of voltage that runs through the electrical system safely and allows the parts to use it with best results, while any fault in this can cause the flow of high voltage and that can cause spark in the parts. So an high voltage flow of power can cause the bulbs to blow off frequently. While one more problem that comes in the same parameter is poorly built alternator belts, they can surge power due to static built up. While both the problem can be found out with help of multimeter and running some test for the same.

2.) Loose Wiring to the Bulb / Loose Wiring to the Bulb :-

When the connection between the bulb and the wire is loose it can cause the current of the electricity to arc between them. And that can result in either lesser flow of power, which will not allow the bulb to light up or the higher flow of power, which can increase the flow of electricity to bulb and that can blow off the bulb. And this is an major cause for the blow off  of bulbs in the car’s. This can be eradicated with tightening the loose connections or checking the connections.

3.) Quality of Bulb :-

Quality of the bulb can cause a lot of difference in your car. A poor quality bulb might not light up properly or lights very dim and can cause a lot of problems during driving. And poor quality bulbs have thinner gauge in filaments and thinner filaments and vibration in car during driving cause the blow off of bulbs in cheap quality of bulbs. While change in voltage can cause them blowing off easily too. This can be sorted out with going for a sufficiently good bulbs.

4.) Touching the Bulb Glass During Installation :-

If you are changing your bulb bare hands than be ready to have a blow off of that bulb or might be explosion in bulb. Halogen bulbs have a function to light up, they need to get heated evenly than only they will work properly but if you have changed them bare hands and there is finger mark, or dirt, or grit, or oil from your skin has been left on the bulb than the chances are high that the bulb will not get the heat evenly and it will cause it to blow off. This can be avoided by only wearing gloves and if working without gloves than by only touching the metal part of the bulb.