How Car Fog Lights Work: How to Use Fog Lights and When Not to Use Fog Lights

How Car Fog Lights Work: Fog lights are common on taller vehicles, such as trucks and SUVs, but are rarely seen on smaller vehicles. The term "fog" is in the name, but it is not always clear when and how to use fog lights. This video defines fog lights, explains how fog lights work, how to use fog lights, what are fog lights, buying fog lights, when not to use fog lights, and highlights the positives and negatives.
Chapters
Intro 0:00
Overview 0:01
What are fog lights 0:31
When NOT to use fog lights 1:22
How to use fog lights 2:01
Buying fog lights 2:22
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[@BuildYourOwn]

Here's everything you always wanted to know about car fog lights

[@Zeesarh]

So.. to make my car look cool. Got it! thanks.

[@user-yw2lc3ul2n]

💯

[@jonathans4503]

My car doesn't come with fog lights but I'm doing a makeover on it upgrading everything to LEDs from halogens. I was debating whether or not I should add after market fog light capabilities to it

[@jeremyh.pritchard5325]

@@jonathans4503 Consider fit ment of a rear fog light. You'd buy a 3 pole switch bearing a yellow or orange LED to act as required telltale. You Earth the witch to one pole, run a wire to the rear fog, and take the feed from the park light circuit. You also Earth the rear fog itself

[@TheWidgit7621]

Drink every time he says ‘fog lights’

[@BuildYourOwn]

I guess you're gonna be tore up

[@milanpaudel3103]

That is not going to end well xD...

[@shrekdaddy6912]

​@@BuildYourOwn Thanx I'm in the hospital getting my stomach pumped

[@jaylu7971]

Fog light is useful in floods this will also tell you if the flood is too high in the level of your engine where it will get wet.

[@jeremyh.pritchard5325]

Under US regs (FMVSS), front fogs are wired to operate only on low and high-beam. For the rest of Earth contracted to the global UN regs, they also operate on the park (sidelights/position) lights. Here, we suggest turning off even low-beam headlights to further reduce glare, and to rely only on the front fogs (& Parker's) at reduced speed. The action also improves the visibility of front indicators, that are often masked by low-beam headlights. Intended for the very worse visibility conditions, say less than 50m visibility. Under such conditions, your vehicle's rear fog light should be activated, it offers many seconds extra warning to following traffic. Switch the rear fog light OFF once visibility improves.

[@One_1_11]

When I bought a Subaru the salesman set the controls so the fog lights would automatically turn on when the automatic headlights turned on. I kept it that way for a long time until a random mechanic finally turned it off. Sometimes it's not the fault of the driver, it's the fault of the dealer.

[@larryk8584]

Thanks man

[@BuildYourOwn]

Thank you for watching

[@Faydurr]

All fog lights should be yellow. No need for additional white lighting. Plus makes car look more aggressive. Also helps visibility IMO. Hell I run yellow halogens in my low beams. Brightens up road but with less refraction and need for high beams. Plus the lack of white light and having yellow the mist of driving in rain/fog or poor conditions doesn’t refract as much of the color spectrum catching those particles creating a glare affect. The yellow cuts that down tremendously and are still brighter from behind the wheel than OE halogens (dull white) and not blinding drivers running an LED in a non projector or halogen style lamp. LEDS reflect off the internal mirrors in a manner that yes you can see better. But not on coming traffic. Halogen headlamps were designed for the 360 degree from the lower power halogen to project a nice cut off below eye level while projecting as far as possible. LED lights often have two/three or more led chips and create l, well eliminate the clean cut off top beam with having light projected everywhere. So please adjust headlights accordingly (fairly simple to do) and to all the a-holes with your overly massively lifted trucks with your super cool 8500k HIDs/ LEDs. At your fight your basically driving around with high beams on at all times. Dangerously annoying. Put all that stuff park into lifting and modifying your truck but don’t adjust headlights. Or care to. Just wanna be flashy. Especially to those running a 24 or so in wheel and rubber band stretched all terrain tires. Built with mommy and daddy’s money or else you’d be sensible enough if you’re lifting your truck for ground clearance and mounting an all terrain tire but yet on massive wheels and it’s a tiny sidewall. Defeats all purpose. Tangent over lol

[@xtrchessreal]

Yes I just installed projector LED headlights that have a cut off at 30 inches or so from ground that is easily adjustable down, the high beams I can see the tops of trees with, I plan to adjust these further down. The high beam really should be for when you want to see up coming signage etc especially on country roads. As explained in this video a fog light works properly when downward angled. I am thinking of adding a 32 inch amber bar in the bumper of my 1st gen Taco but have it angled steeply downward. Here in Colorado running in back country roads during a whiteout is quite nerve racking when you can't even see the side of the road reflective posts. Maybe two so called amber ditch lights angled down and to the side would be even better. I drove through our 13 inch blizzard on 02/09/2024 between Johnstown and Greeley twice that night. The lack of street lights makes this very dangerous. Blackness with star wars light speed effect blinding me. I was doing 20 to 30 MPH on farm highways. Saw at least a hundred vehicles in the ditch and medians. I had to laugh at the number of these high lifted trucks with stupid tire lights, low profile tires, ground lighting effects etc that were stuck in the ditches. My 1st gen Taco is stock and here I am driving by idiots with perhaps 10k or more invested to make it look cool in a ditch...Ha Ha I still have to snicker. Sorry but those people are stupid. I would love to see their faces when the Tow Truck shows up and winches them sideways and maybe bending or breaking the control arms, scratching up the rims and rip out the crap DIY wiring for the lights. I'm so tired of being blinded by these people.

[@Mertesacker1]

I mean you shouldnt always have them on, but most of the time I see people with them on, and they don’t blind at all, they aim to the ground and are not more powerful than your high/low beams…

[@adheshn7507]

very useful ,thanks.

[@BuildYourOwn]

So nice of you

[@mistermoiz4385]

Owesome information 👌

[@dotancohen]

1:00 No, the headlights are not intended to light up the road. Headlights are, by regulation, intended to light up obstacles in the road and on the side of the road. This is actually an important distinction.

[@tornadochasingsiege]

Wait if it is on trucks and SUV's then why the heck is it not on buses

[@patmcbride9853]

And why do Highway Patrol vehicles not have them?

[@budgetbraintech]

gg info sir👌 in my point of view i understood that fog light for only to clear fog in the road more especially at winter right sir?

[@BuildYourOwn]

Fog lights are only necessary when the weather is bad or it's difficult to see the road ahead of you, which means you should save them for dangerous driving conditions like rain. When visibility is low is when they are often used.

[@budgetbraintech]

@@BuildYourOwn ok fog light for road visibility but they are given in higher variant in cars but in lower variant driver will panic at rain😥

[@SLAPDOORS]

Basically, the legal, dull version of neon underglow.

[@LawrenceMarkFearon]

Why are fog lights disappearing?

[@sn5837]

Presumably more powerful matrix LEDs becoming the norm and other measures of cost cutting

[@LawrenceMarkFearon]

@@sn5837 but matrix LED’s are mounted too high and above the fender to be effective. They’re literally just adding more headlights. That’s why Tesla’s still have them. Definitely some cost cutting with the others.

[@Markoboy99]

@@LawrenceMarkFearon Newer Audis integrate front fog lights in the main headlight assembly

[@LawrenceMarkFearon]

@@Markoboy99 they aren’t fog lights as per SAE J583 definition. Sorry.

[@user-yw2lc3ul2n]

For cost saving and future design

[@ThePlowGuys]

Sorry but you missed a lot in this video.

[@crustydownunder]

Just about everything you said was wrong!

[@reallygoodcarshow6355]

I thought they were meant for people that are terrified of the dark and would rather blind oncoming traffic than not see like it’s daytime at all times? 🙄

[@BuildYourOwn]

They are. I forgot to include that one

[@michaelp.3485]

So how the hell are foglights "blinding" when by design they aim lower than headlights? You are just full of crap.

[@reallygoodcarshow6355]

@@michaelp.3485 😘