March 20, 2010

HID

What does "HID" bulbs stand for?
"HID" stands for "high intensity discharge" light bulbs. Most cars can be retrofitted to accommodate HID lighting if desired. However installing HID's into a vehicle not originally equipped with them from the factory is technically illegal.

Ideally, before installing HID make sure the vehicle's headlight uses an appropriately designed projector lens (as opposed to a reflector), and of course that the headlights are properly aligned after installation.

What is the difference between HID and Halogen bulbs?
A halogen bulb consists of a wire filament surrounded by an inert gas. When electrical current is applied to the filament, it glows brightly to produce light. Contrast that with an HID bulb which has no filament, but instead consists of xenon gas, mercury, and metal halide salts.

The xenon gas is ignited by an arc of high-voltage current and glows brightly. Also, the high voltage is supplied by a ballast, so in these respects it is like a fluorescent light. The light output from HID headlamp can be roughly three to four times more than for a standard Halogen lamp.

What color temperature HID lightings have?
The higher the color temperature of light, the more blue light is produced by the light source.
HID bulbs may have color temperature up to more than 10000K but 'legal' color temperatures are not to exceed 4700K. Any color temperature above 5000K will be bluish. Normal light from Halogen bulb is around 3100K to 3600K. To put that in perspective, the sun's light is around 5200K.

With HID of 'Legal' color temperature [4300K ~ 4700K] installed in the car will help our vision to be closer to what it is at midday in the full sunlight.

Why bluish color temperature Illegal ?
At night, eyes adapt to the warmer tones of the road lighting and other cars headlights, and the bluish color HID lights might be problematic, as the eyes may not be able to register color information correctly.

Are
HID conversion kit expensive?
Not any more. China made HID conversion kit [consists of two ballasts, a pair of light bulb and wiring harness] is sold as low as RM138 at leading car accessories shops... about the same price as top brand Halogen bulbs!

A low price is very tempting (believe me, I'm the same way), so my best advice is to solicit opinions and do your research before buying.

What are some good quality brands to look for?
Generally speaking, Philips or Osram kits are recommended because they are the brands used by the major automotive OEM's. They count on quality components because dependability is critical to auto manufacturers. Other brands may use bulbs or ballasts of inferior manufacture that are prone to early failure. Perhaps even more sinister, some kits tout their use of Philips or Osram ballasts while they covertly use cheap bulbs of unknown origin that burn out quickly. So it is a good idea to check the brands you buy. They likely won't be branded by Philips or Osram directly, rather they are usually re-branded by another company.

Is is difficult to install HID conversion kit?
Just plug and play if u know how to remove and reinstall the bulb. No wire cutting, no drilling and no screwing.
Bought a set of HID conversion kit for RM198 today on my way back from outstation. Installed after dinner [click How to Install HID Kit]

Tested on-road @ Tmn Tsk Cempaka... looks more like 4700K color than 4300K as printed on the box.
H7 HID-1
The beams not well distributed [?], probably needs L-R and UP-DOWN adjustment to match with JPJ/ECE Regulation.


35W HID vs 55W Osram Nightbreaker
H7 HID-3
below is the picture taken a few months ago with Osram Nightbreaker bulbs for comparison


What are the advantages of HID?
HID lights bulbs have lots of advantages over standard halogen lights which are as follows:

• HID kits produce 3 times more light than any traditional halogen bulbs, which results in higher visibility.

• It uses only 35 watt of electricity making it efficient for use. [By measurement ballast input current is 3.55A]

• Long life, HID bulbs lasts much longer than any standard halogen bulbs. It has an average life of about 5-10 years so you don’t have to make frequent replacements.

• More efficient, as a standard halogen bulb consumes almost twice as much electricity as HID bulbs.

• Mechanically, HIDs are a lot more durable than halogen lights. They can withstand a greater amount of vibration and shock from the road due to there being no filament.

Other features
• A HID Kit can be easily installed - Just plug n Play
• It serves your vehicle with an attractive look.

Frankly, Why install HID's?
Admit it, they look cool!


| HOME | How to Install HID Kit |

7 comments:

Unknown said...

huh? uncle sudah tukar ke hid? aduss, baru jer pasang Osram nb 3 bulan lepas...kalau ler saya sabar sikit....

Wan A. Hadi (one.D) said...

Osram NB tu dah pindah ke 206...
Uncle perlu lampu yg lebih terang maklumlah selalu pandu long distance waktu malam, lagipun tua tua ni mata pun dah kurang ....

hasnul said...

fulamak mmg obvious brightness HID than the std halogen ye. but how does it fare in the rain at night? x silau ke oncoming cars? slalunye high end car with factory fitted HID or bi-xenon silau bila tgk, bright bluish lights

Wan A. Hadi (one.D) said...

Hasnul,
That's why it is illegal to use color temperature higher than 4700K. 4300 is the best compromise.

HID has been lab-tested and the result is.... it is 40% more glare than halogen bulb of the same light output.

Not all headlights can be converted to HID even though basically having the same H7 base, but some ppl remove the 'anti-glare cap' so that HID bulb can fit in. It is illegal.

yseng said...

Uncle, can you kindly share with us which HID kit u bought? And from which store? Thank you :)

Kong Chee Kin said...

Hello. May I know where did you get this 4700k HID Kit ? I think im gonna get 1 set of it for my 308 too.

Wan A. Hadi (one.D) said...

I bought from car accessories shop

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