PIAA

[Brandon]

I'm looking to upgrade my OEM fog light bulbs with something better for my Jeep Grand Cherokee. Anyone have these PIAA bulbs? They are yellow which they claim are better for inclement weather and less glare.

http://www.shopatron.com/product/product_id=PIA13556/353.0

 

[Brikhead]

PIAA makes some decent quality products, but thier bulbs are rather pricey. If yellow lighting is what you're looking for, Phillips Weathervision bulbs would do basically the same thing for less $$. They can be purchased here.

 

[ScottB]

I like the Phillips/Sylvanias a lot. I also have tried "GP Thunder" bulbs which are also nice.
I use 9006/9005 with a combination of 3500k/4500k in the fogs/lows and I think they're 4500s in the highs as well.
Great combo.

Scott

 

[mshu7]

http://www.hoen-usa.com/plus.htm

I think that PIAA's are way too OVERPRICED. While I like the look of SilverStars, they just don't last that long.

I've heard numerous good things about Hoen but I don't haven any personal experience. Let us know what you decide and how you like what you end up with.

 

[Brandon]

quote:

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Originally posted by Brikhead:
PIAA makes some decent quality products, but thier bulbs are rather pricey. If yellow lighting is what you're looking for, Phillips Weathervision bulbs would do basically the same thing for less $$. They can be purchased here.

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Can't find them here.

 

[Brikhead]

quote:

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Originally posted by Brandon:

quote:

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Originally posted by Brikhead:
They can be purchased here.

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Can't find them here.

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Look under the appropriate bulb type on Rallylights.com's website. If you scroll down, they list them as Hella "Yellowstar" bulbs(for most applications). If they don't have a Hella equivalant in stock, they'll substitute w/Phillips. As far as I know, there's really no major differences between Phillips Weathervision & Hella Yellowstar bulbs.

 

[boone88rr]

If the PIAAs are what you want and you don't mind spending the money, get them. I believe they are worth the money, they last longer than anything else I've used and work really, really well.

I have the H4 Super Plasmas in my headlights and the HB Plasma Ions in my foglights. The yellow really helps out in the snow, fog and rain.

These aren't my pics but from someone who has the same combination of bulbs (edit: actually he has Silver Stars in his headlights

). It's from a 2005 Tacoma.

Some guys seem to like the Nokya's as well, a little cheaper, $30. I have no comment on their reliabilty or quality of light. Just passing it along. Good luck.

Nokya Bulbs

 

[Shaman]

I will recommend doing or buying something like this to anyone who wants better lights.

http://users.adelphia.net/~bpaskevich/index_files/Headlamp_Harness_Upgrade.htm

 

[Tree Hugger]

quote:

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Originally posted by Brandon:
I'm looking to upgrade my OEM fog light bulbs with something better for my Jeep Grand Cherokee. Anyone have these PIAA bulbs? They are yellow which they claim are better for inclement weather and less glare.

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Yellow fog lights are a complete myth.
It is true that yellow light diffracts about 20% less than white light. (hence the myth).
It is also true that the human eye is 40% less sensitive to yellow light than to white light.
So you gain up to 20% (only 20% in thick fog) and always lose 40%. Not too smart, huh?

You'll notice that no car manufacturer supplies yellow fog lights...

 

[ScottB]

Not sure about your stats, Tree Hugger, but I've tested both and find yellow to work better for my eyes.
I notice lots of things that car manufacturers do that I wouldn't do - not my standard of measure.

Scott

 

[mshu7]

The only car that I can think of that has yellow fogs is the Lexus GS series, the older model...not the new redesigned model. I have to say, I loved the look of those cars with the HID's and the yellow fogs.

 

[Brikhead]

Mercedes Benz used to offer integrated OE yellow fog lamps on a few of thier models. I'm pretty sure Volvo did as well(European-market 900 series cars).

 

[boone88rr]

"So, what explains the persistent subjective preference amongst experienced poor-weather drivers for yellow fog lamps, despite decades of white fog lamp prevalence? Selective-yellow light can improve a driver's ability to see in fog or rain or snow, but not because it 'penetrates fog better' or 'reflects less off droplets' as is commonly thought. That effect is known as Rayleigh Scattering, and is why the sky appears blue. However, it occurs only when the droplet size is equal or smaller than the wavelength of the light, which is certainly not the case with ordinary fog, rain or snow. Roadway Fog droplets are several orders of magnitude larger than visible light wavelengths—no Rayleigh Scattering.

So, why do yellow fog lamps work better? It's because of the way the human eye interacts with different colors of light. Blue and violet are very difficult for the human optical system to process correctly. They are the shortest visible wavelengths and tend to focus in front of our eyes' retinae, rather than upon it. To demonstrate this to yourself, find a dark blue store front sign or something else that's a dark, pure blue against a dark background in the absence of white light. From any appreciable distance, it's almost impossible for your eyes to see the blue lighted object as a sharply defined form...the edges blur significantly.) Blue also is a very difficult color of light to look at if it is at all intense...it stimulates the reaction we call "glare". So, culling the blue out of the spectrum lightens the optical workload and reduces glare."


http://danielsternlighting.com/tech/lights/light_color/light_color.html


http://www.lightingresearch.org/programs/transportation/pdf/SAE/2001-01-0320.pdf

 

[ScottB]

to you Boone88rr!

Scott

 

[surfstar]

Another Lexus, the IS300 is a pretty new car with yellow fog bulbs from the factory.

 

[Shaman]

COme to Japan, there are a whole lot of yellow HID fog/white HID headlight setups.