Honest Auto Tech

Hello This is Bhushan. I will try to give you AutoGyan (Automotive information)/Honest Automobile Reviews.

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Monday, September 10, 2018

What Is the Difference Between H4 & H7 Headlights?

Hello, 
Headlights are boon for the drivers for driving at the night, but most of the times OEM headlights are incapable to ample amount of brightness on roads. 

A variety of headlight bulbs are on the market, some that are required by a specific vehicle or motorcycle model and some that give drivers the option of customizing their headlamps. H4 and H7 bulbs are high-intensity discharge halogen bulbs, meaning they emit extremely bright light.


To increase the visibility of Headlights the Aftermarket Plug and Play type bulbs can be fitted without any change in wiring. The results of this Bulbs is also best tried and tested products, I personally recommend to all owners who want to upgrade their bulbs without any wire cuts, which will void your warranty.


H4 Bulbs

H4 bulbs contain two filaments, giving them the option of being either high- or low-beam lights. The bulb has a three-pronged attachment to the wiring harness. Originally developed for European race cars, these bulbs are very bright and can give off white, blue, violet or yellow light.

Link for H4 headlamps 

1. Philips H4 X-treme Vision Headlight Bulb: https://amzn.to/2x1rcVt
2. Osram H4 Laser Night Breaker: https://amzn.to/2O4AJ5N

H7 Bulbs

H7 bulbs contain a single filament. H7 bulbs also come in white, blue, violet or yellow options. The most significant difference between the bulbs is the attachment. H7 bulbs fit different bulb sockets, having a two-pronged plug. Owner's manuals must be checked to determine the type of bulb needed.

Link for H7 headlamps 
1. Philips H7 X-treme Vision Headlight Bulb: https://amzn.to/2wXIa7t
2. Osram H7 Laser Night Breaker: https://amzn.to/2O02vQx


Warning

Check vehicle manuals before installing new headlamp bulbs. Bulbs with too high of a wattage can damage the wiring harness for the bulb and the headlamp reflector. When unsure, contact the bulb manufacturer to ensure vehicle compatibility. HID bulbs are extremely bright and can cause visibility issues for oncoming traffic. When installing the lights, adjust them downward to increase safety for other drivers.

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