I’ll try to grab one here in a little bit. The lens isn’t fully exposed because of the odd shaped opening the Ascent has. When testing I removed the fog light trim piece but there was no difference in output. So the amount that the trim piece covers the lens doesn’t hurt it at all.
Yeah, I've always wondered why almost no one uses yellow. I got the vinyl overlays, but never got to installing them.
That is a personal choice as to color temperature of the light, you do you. However there are many scientific studies showing that selective yellow is far more effective at cutting through fog due to the reduction of blue through violet color wavelengths that causes poor vision when the light is reflected off the moisture in the air like a prism. Where the DD SS3's accel is that they are the closest thing to selective yellow you can find in an LED light source. The lenses are designed specifically for each level of light as the chip used is different in each power rating. So they changed the lens color to block the blue through violet of each specific LED. Hence why the MAX version's lens is a darker amber than the Sport and Pro.Ideally, use aftermarket fog lights so you can operate them with your headlights off. The purpose of fog lights is to shine underneath the fog. Cars that have headlights and fogs on at the same time defeats the purpose of a fog light. The headlight illuminate the fog, causing the blinding effect. Fog lights can shine much further than 10-15', but it depends on how low you can mount them. I used to own a company that sold aftermarket vehicular lights.
Personally, I don't find any real advantage to white light over yellow light.
No problem!! I'll let you guys know what they send back.
I think that's the best advice. Do what you think will work best for you, knowing that your results will be grounded more in your personal preference and your set of eyes rather than a broadly held position that one color is universally "better" than the other. The post above about using fog lamps as a warming supplement to the white headlamps is an interesting idea. @Fergie, I presume you've kept the fog lamps so that their aim is, at most, just under horizontal (measured from the vertical center of the lamp)?That is a personal choice as to color temperature of the light, you do you.
Very good points there. In fact, in France it was law to have selective yellow for a short time. I agree with the assessment that the reason many manufactures do not use a selective yellow for lighting is due to customers not liking the appearance, facts/science be damned. I am glad that safety ratings are now rating headlamps as well. I believe that will force manufactures to make not only better lighting for the driver but more controlled lighting that reduces glare from oncoming traffic so they can achieve higher safety ratings.The traditional use of selective yellow lighting was to reduce glare. Studies on the topic are mixed: some report yellow as better, some report white as better, and some have shown no real statistical difference, with various advantages and disadvantages more or less working against each other. Driver perception of forward vision is influenced by a combination of what we think our eyes can see (which is often an overestimation) and confirmation bias. Selective yellow lighting was traditionally very popular in Europe and in rally racing in particular. Though you don't often see true selective yellow used in such events anymore, tradition still plays a strong role in the thought process.
Blog Post | Fog Doesn't Play Favorites with Headlight Color | Car Talk
Selective yellow - Wikipedia
And, the authoritative source, Dan Stern: Daniel Stern Lighting Consultancy and Supply
North American and European ECE regulations both allow for white or selective yellow for fog lamp situations (selective yellow is no longer allowed for headlamps in Europe, though it used to be popular there). If there was a clear safety advantage of yellow lighting, I think we'd see more of it at the OEM level. I'm sure a point could be made that many drivers wouldn't like the yellow lights, subjectively, and would want their fog lamps to match the color of their headlamps (thus, the reason for white from the factory). There may be just as many who prefer selective yellow and criticize auto makers for putting in white lighting.
One point remains valid, though. Fog lamps are NOT designed to allow you to continue driving 55 mph in pea soup. Fog lamps are intended to help you see the reflective lane lines on the side of the road so you can poke along when visibility is near zero. This is why fog lamps are (correctly) aimed low. They're not designed to supplement your headlamps in normal driving.
I think that's the best advice. Do what you think will work best for you, knowing that your results will be grounded more in your personal preference and your set of eyes rather than a broadly held position that one color is universally "better" than the other. The post above about using fog lamps as a warming supplement to the white headlamps is an interesting idea. @Fergie, I presume you've kept the fog lamps so that their aim is, at most, just under horizontal (measured from the vertical center of the lamp)?
I'm not sure. The difficulty of making it perfect is more of an issue with the way Subaru designed the fog light opening. The OEM fog light has a very specific and odd shape. Even though it is round, Subaru made the opening on the fog light trim piece in the shape of the of the lens on the fog light. This makes it challenging for any aftermarket manufacture to make one that fits "perfect". However if they used a standard bezel I believe the fog light fitment would be better behind the trim piece. Still haven't heard back from them. I'll have to check in on that, they usually get back to people very quickly....could have been on my end too.