How to install H4 or 9003 LED Headlight Bulbs - Tips and Tricks from Headlight Revolution

All H4 Style LED Foward Lighting Upgrades: headlightrevol...
In this video, Chris shows how to install and aim some of the most common LED H4 and 9003 bulbs on the market!
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Fitment guaranteed! If it doesn’t work, we will solve the problem for you. We strive to give an excellent customer service experience. Our dedication to delivering on that promise is backed by a no-hassle return policy. We’ll provide a full refund on products returned within 30 days, no questions asked.
All Lighting Upgrades For Your Application: www.headlightr...
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Note: This video is for educational purposes only and may show street-use content with products that may not be DOT compliant for use on public roads. The video is not intended to imply vehicle-specific street legality. LED and HID bulbs are street legal in the USA for fog light use and not in low beam or high beam headlights because they are not compliant with DOT / FMVSS108. When looking for on-road-use headlight upgrades we recommend DOT-compliant headlight housings, not bulb replacements. Certain specialty vehicles strictly limited to off-street use and not having DOT registration or license plates may use these products exclusively off-streets. International street legality varies by country. For detailed clarification on-street use, go to www.headlightr...
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Other videos that we recommend watching:
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💡 Are LED Bulbs Brighter than Halogen? • 100W Halogen VS LED Bu...
💡 Are LED Bulbs Brighter than HID? • HID vs LED - Which is ...
💡 LED Bulbs Brightness Shootout - which bulb is the brightest? • Best and Brightest? We...
💡 Which HID Kit Color is the brightest? • Which HID Color is the...
💡 The TRUTH about LED Bulbs! • The Truth about LED bu...
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For the best LED automotive lighting selection in the world, check us out here: headlightrevol...
If you have any questions about any of our products, email us at Sales@HeadlightRevolution or give us a call at [phone]!
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We Do Lighting Better Because We Test!

[@thewcalame506]

Explaining the shield is something that many others have neglected. Thank you so much. This is by far the best explanation that I have viewed.

[@HeadlightRevolution]

Glad it was helpful!

[@mudzryrahim9130]

@@HeadlightRevolution 0

[@CptSlow89]

@@HeadlightRevolution True but on my motorcycle, high beam shields are opposite that in your video and light is great.

[@yuchub7389]

The best tutorial videos here in youtube🔥

[@tiggertail]

You saved me! I am crying out of joyI found this video brother !

[@wildscorp]

This video was big time helpful! I watched a lot of videos trying to figure out how to upgrade my 2002 Tundra to led headlights and yours was the only one that solved the mystery on how to incorporate the dust cover by showing how the collar comes off the led bulb. I still had to modify the dust covers some to allow the bulbs to fit right and yet, now the leds work great and still have the protection of the OEM dust cover. Thanks a lot! 👍

[@eeec7]

Should I cut the dust covers a little bit? If so, where?

[@ChrisOnline1]

It was a pain in the ass when I tried installing the led bulbs on my sister's Yaris and trying to figure out the proper alignment. Now I finally understand the proper way to align the bulb. Thanks!

[@Panda.0038]

This video is 2 years ago but it still helped me thanks

[@905nite]

Thank you. The 9003/H4 bulb for me was the hardest bulb I've ever had to install. Particularly on a 2012 Honda CR-V EX. 🤬

[@DVDiclan]

Nice informative video. Personally would have liked to see some beam pattern comparisons of the different H4 bulbs as I can't find any of your bulb shootouts that feature H4 bulbs and I'm thinking of getting the new GTR Lighting bulbs. I'd like to point out that when I installed LED H4 Bulbs in the past, I found out that the alignment isn't supposed to be perfectly straight 12 o'clock when I referred to the stock halogen which was slightly off by about a notch and this gave me the best beam pattern. This may be vehicle specific but still something to look out for. Keep up the good work guys.

[@brat_paq]

I just learned from this video that the shield is facing up I thought that should be easy, just point it at 12 o clock. Now I read your comment and it's not exactly 12 o clock. Now I think I should focus the original halogen on a wall and trace the pattern on the wall. Then put the led bulb and make sure the pattern are the same as the original halogen.

[@lfc214]

the meaning of perfect can be found in this video 👌👌👌

[@HeadlightRevolution]

🤘🤘🤘

[@gelan1212]

Thank you very much, it’s the only clear explanation I’ve ever found.

[@HeadlightRevolution]

Glad it helped!

[@rontanuecoz]

now i know how to identify if my led bulb is correctly installed how does it looks like with the stock halogen light... thanks much... love watching all your videos!!!

[@HeadlightRevolution]

I'm glad we could help out!

[@davidnhowe6628]

Thank you for explaining on the rubber cover had put mine without the cover just got back from putting it on lol

[@jimdimaano9181]

I'm glad I found this video. Thanks, man!

[@HeadlightRevolution]

Glad it helped!

[@ericbateman5491]

Perfect explanation of the H4. Thank you!

[@HeadlightRevolution]

Glad it was helpful!

[@KANEandLYNCH3]

I’m curious: my dust cover doesn’t have a hole in the center, and is just a cap that closes off the housing. How do you recommend navigating that with an LED bulb’s heat sink and cable? Is it advisable to just not use the dust cap?

[@bobmyrick3564]

Howdy, Outstanding presentation, you sir have an excellent way to explain these lighting products. Thank you

[@HeadlightRevolution]

Thank you!

[@bitokstv777]

Thanks a lot sir. On your demo, I easily installed my new LED headlights...

[@HeadlightRevolution]

Glad it helped

[@tommyo777]

Thanks! This, and your video about LED types has helped me make an informed purchase and I expect, a smooth installation/alignment.

[@HeadlightRevolution]

Glad we could help!

[@Pm9x6jh]

Awesome, helped me install my bulbs the right way

[@h0sx]

I have chevey cruze 2017 middle east H4 bulb, it works installing LED headlights 🤩🤩🤩🤩 Thank you Chris 💜

[@HeadlightRevolution]

Nice 👍

[@marcomerito6049]

Super! Great Video

[@HeadlightRevolution]

Thank you very much!

[@AnDroid-cq3sr]

Thanks you so much to solve misery between the lock pin and dust cover .

[@HeadlightRevolution]

Thank you for watching!

[@360.Tapestry]

thank you! i needed to know how to navigate that dust cover

[@HeadlightRevolution]

No problem!

[@shanefoote4808]

Should show what to do with the extended cable and plug length on the LED’s...

[@HeadlightRevolution]

Depending on the headlight and the truck, You can either fit it into the headlight with the factory dust cover or zip tie it neatly outside the headlight. -Chris W

[@tjbay13]

yup. im sittin here trying to plug the damn thing together and it doesnt want to fit. so, for starters, that sucks. would like to see it demonstrated.

[@justatiger6268]

Thank you for this great video. However, I would like to know a bit more about the differences between them. Specifically, ones that have fans and those that don't; are the fans going to accumulate dust and break? Will the entire LED bulb then overheat and simply stope working? And conversely, are the fanless designs better in this respect or worse on account of poor head dissipation?

[@HeadlightRevolution]

The fan based bulbs typically are brighter because they can be run harder. We used to see more fan failures when LED bulbs first came out a few years ago, The new ones work a lot better and it’s almost entirely a non issue. I’d personally only run a fan based bulb now for maximum brightness. -Chris W

[@justatiger6268]

@@HeadlightRevolution I feel so stupid for writing this. I've seen your other videos now and i plan on watching all of them because they are very good indeed. Thank you Chris!

[@HeadlightRevolution]

No problem at all, That is why we are here! Let me know if you need help with anything else.

[@murry001]

THANK YOU! I was wondering how to get them installed properly :) :) :)

[@HeadlightRevolution]

You're very welcome, thanks for watching!

[@dand3841]

Great video. Thanks for taking the time to make it.

[@HeadlightRevolution]

Thanks for watching!

[@derekhuber3392]

A video of the Morimoto 2Stroke 4.0 would be nice since it has a square body now.

[@HeadlightRevolution]

Will require custom wiring and 1x Ford PN# 8U2Z-14S411-AAC. See Install Guide for more information.

[@GOD1SF1RST]

Very good video. Thank you

[@HeadlightRevolution]

Thank you too!

[@csvpresents8978]

Very good detailed explanation...thank you.

[@HeadlightRevolution]

Glad it was helpful!

[@eugenecastro]

This is a great video to watch prior to installing the h4 9003 led lights. I was able to install it properly with your video. The only issue i have after installing my led is that its always ON even when the switch is OFF and the AUTO doesn’t work as well. Basically it’s always ON. Any advice on how to fix it would be much appreciated. Thank you

[@brian_2040]

Eugene, you must be referring to the daytime running lights. There are ways to turn them off. But it's a safety thing, I'd leave them on, it can't be that bad on the bulbs.

[@moazdaza7275]

Perfect video! so informative and to the point! one question, H4 (7,11 etc) are those numbers different sizes? (like do h4's have a shorter LED base? in a way that the LED would be in the same sweet spot to be focused by the housing just like the original Halogen light? ) or are these numbers for a different power/higher level/quality etc.?

[@HeadlightRevolution]

These are different, the base of the bulb, the plug, the LED placement, etc, will all be different based on the size of the bulb. With the stock halogen bulbs, this number could mean a difference in power as well though. For instance, 9006/9012 are the same minus the top tab on the bulb being a little wider and the 9012 generally uses 10-15w more power. It is common for people to trim the larger tab on the 9012 bulb to fit into a 9006 housing since the 9012 is brighter.

[@moazdaza7275]

thank you so much for explaining, sharing your info/knowledge and for your time! May Allah Bless you and guide you to what is best for you in this life and in the hereafter! ❤

[@JOHNMINKA]

i have fitted a cob led bulb to my motorcycle i get low beam i don't get high beam . i notice if not enough power on battery it switches to low in instructions so i put charger on to a battery doing 13.3 volts STILL NO CHANGE only get low beam could it be a faulty bulb or is it not the same connections as a h4 socket. regards john

[@rio20d]

got some questions, if you look at the recent release of Toyota cars like the corolla and rav 4 , seems like they all uses LED headlights but interestingly enough they use both the typical LED projector headlights which has been around for a while now but also a parabolic led headlamps ( which is not projector base but using reflector in it). What's your view on that? I would like to know, thanks

[@toomasbaunis343]

Great job explaining led installation procedures. I've got a 1986 Winnebago motorhome with sealed beam headlights. I purchased new 4x6 Halogen lenses only. I can now fit led bulbs into the lamps, but the sealed beams have a 2 blade and a 3 blade socket. Is there an accessory pigtail available on the aftermarket to complete the connection so I can have led lights? Can i get a led pigtail from a dealer trim off the old bladed sockets and rewire to complete connection?

[@Ben24-7]

I bought some cheap no brand leds H4 bulbs and when switching from low beam to high beam there was hardly any difference, is that normal for all Led bulbs , or is it because I bought cheap knock off's, Thanks for the video

[@03Lorac]

The best video. Thank you!

[@lenroythomas9766]

Love this information very helpful 👏 👌 👍

[@HeadlightRevolution]

Glad it was helpful!

[@InBoostWeTrust7MGTE]

i was so hoping to see the light output of this H4 bulb

[@HeadlightRevolution]

Check out our Toyota Tundra bulb shootout video, It uses H4! -Chris W

[@greatmystery11]

Thanks for your efforts, they are appreciated!

[@HeadlightRevolution]

Not a problem, we are always here to help! Let us know if you need anything else!

[@keithdavison7357]

Thanks for the video. I recently bought another type of led that was three sided. So wasn't a issue. I just bought a new set and it had the half moon cup and I had known idea if the cup went up or down. I would of assumed up to keep the low beam pointed towards the ground. But you say it goes under. Thx

[@anm0604a]

this is the best guide

[@javierpenarandach.1756]

Great video! Still, I simply don't get it, why is it so many people and reviews indicate light bulbs to be h4/9003? I mean from what I understand they are different, like h4 cannot replace 9003 or viceversa, am I wrong?

[@HeadlightRevolution]

In the LED world, they can! The connectors are the same, but the bases would be slightly different. With LEDs, you just get a universal base for both applications.

[@shawngixxer]

Hi, my 2014 Honda CR-V calls for 55/60 watts, if I replace the bulbs with 100/90 watts if my wires get to hot over time?

[@tommygomez6298]

Great video! I have a question... Do all H4 bulbs have both high beam and low beam?

[@RomboutVersluijs]

Why does the lee bulb have such a long cable. Won't that cause issue in wet conditions?

[@muhdizhar8746]

Thanks for video

[@eladioleon160]

Hi I’m getting the led auxito h4 led 9003 to replace the old bulbs in my Chevy bel air 57 are they will fit?

[@squirrelkiller3589]

Great video, quality content

[@HeadlightRevolution]

Thank you, glad that you liked it!😄

[@BloodAsp]

Darn, I just installed my bulb upside down. I wasn't sure which way the shield was supposed to go, so I just chucked it in there thinking the shield would protect people from the running lights, and the high beams would be the back set.

[@HeadlightRevolution]

It happens! That's why we make these videos 🙌🏼

[@craigk5505]

I installed the SEALIGHT H4/9003 LED Bulbs on my honda element. They look great but when the truck is turned off they still give off a low glow for hours. Not sure if it's power stored on the driver or a low current. Truck starts up fine but still concerned

[@astindersinghera766]

Great video, well explained. What led bulb do you recommend for 2004 Mazda Tribute, it uses H4/9003 bulbs. Also would like to have led bulbs that have low and high beams both. I can’t find led bulbs that has both beams. Is that by design? Thanks so much

[@HeadlightRevolution]

I would suggest reaching out to our CS team so we can go over some options with you! 218-755-5200 [e-mail]

[@nightrider4594]

Thank you.

[@NewAdventureBlack]

Can I install H4 LED in H13 halogen headlight? What I have to change? The reason I ask this is because I want to use a producer who make only H4 LED not H13 LED. Thanks!

[@ClarkSaintil]

Good job, verry important

[@wkduff]

Thank you for explaining the shield but I'm trying to figure out where you plug it into. There's no KZbin videos. How to plug these in.

[@HeadlightRevolution]

If you are referring to the dust cover, it just screws into the headlight housing.

[@wkduff]

@@HeadlightRevolution no the cable, I went to Canadian Tire and they said this would work in my car. I cannot find the plug to install it in a 2010 Kia soul.

[@ryansingh6152]

Thank you for the beam explain

[@HeadlightRevolution]

No problem!

[@vinoth20294]

Please explain about headlight base. And which one is commonly used in H4 bulb 43t or 45t? What about H7 bulb..?

[@dann5480]

Great video. I have a question. I got the dust covers on after the LEDs so that the fan assembly and heatsink are inside the rubber dust cover and completely sealed up. Only the wire is protruding which I also sealed with electrical tape. Will it cause issues with overheating? Is it important for the fan to be exposed to outside air? Appreciate your videos a lot. Thanks.

[@HeadlightRevolution]

No, you don't have to worry about overheating! We do recommend using the dust cover and having the fan enclosed in the headlight.

[@dann5480]

@@HeadlightRevolution Thanks!

[@carlosdaudet6821]

Great video! I would like to see the beam pattern using same brand and type of led bulb in both the two headlights in this video. Specially the Honda, comparing halogen beam pattern with led beam pattern

[@HeadlightRevolution]

We will add that to our list of videos!

[@klemen2987]

I have honda civic 2002. Had led lights in it and it was only low beam because I couldn’t set high beam right. High beam was lightning the sky instead od road. It’s H4.

[@HeadlightRevolution]

Hope this fixed it for you!

[@BulletSpoung]

In the US we have more Toyota RAV4s on the road than any other car or SUV made yet you have no KZbin video on them. We have a 2015 RAV4 and would like to replace the H/L and driving lights with LEDs but I can't find any good info.

[@elbertkim55555]

This is awesome!

[@HeadlightRevolution]

Thank you for the supportive comment!

[@libborr]

Thanks much for help. Before watched this vid I installed them and it dazzles drivers too much. Do you think I should turn around them?

[@HeadlightRevolution]

Yes please make sure to check the adjustment of your headlight.

[@christiannefarias4923]

How about the weather protector? Do we need to put it back?

[@HeadlightRevolution]

Yes, the dust cover should be reinstalled.

[@johnkolar8466]

I got termitor 9003 led bulbs for my 04 tundra installed them now my high beams don't work however if I put one halogen bulb in and one led bulb my high beams work again it don't matter what side any ideas

[@容生-i5i]

very good

[@mshk999]

what is the best H4 led and what is the best value for money long lasting led

[@HeadlightRevolution]

Check these out! Lifetime warranty, bright, and when installed correctly this won't be blinding any traffic! www.headlightrevolution.com/H4-9003-Ultra-2.0_2

[@GENX80.]

What about the heat can a load resistor help with that and how do i know which resistor to get??

[@HeadlightRevolution]

H4 bulbs do not require a load resistor, resistors are for turn signal bulbs! You might be thinking of an H4 PWM module, which we can help make sure you get the proper one needed! [e-mail]

[@proakkie942]

Is it recommended to use led bulbs with a reflector?

[@Dontbanhmi]

no

[@benson098123]

Could you do a test of 9003 gtr ultra 2 bulbs?

[@HeadlightRevolution]

We have a few videos coming out on those bulbs, I believe one of them is 9003 based. -Chris W

[@CptSlow89]

My h4 leds were instaled with up and down shield and it was fine. Now I bought the same set and pattern looks weird and low beam is so bad. I will try to turn the shields to 3 and 9 position.

[@HeadlightRevolution]

Yep!

[@CptSlow89]

@@HeadlightRevolution Tried, they locked somewhere in between 9 and 3 but not exactly 9 and 3.

[@richardstamper5630]

I have seen some LED H4 lamps being offered locally but they say it needs an adaptor kit? Looking at your example I can't see any adaptor. The shop tell me that if plugged directly into the old plug then the voltage is too high but it doesn't say anything about that on the packaging. Hope you can help.

[@HeadlightRevolution]

Never heard of that, almost sounds like a gimmick to sell you an extra piece!

[@jakeconcienne6274]

Thank you!

[@HeadlightRevolution]

Thank you for watching Jake! -Chris W

[@HARRUMPH-SAL]

Great points on the shield and bulb positioning. My son's 99 Camry uses 9003 bulbs, which we switched to LEDs. They are "4 side" bulbs. Is there a proper way to identify on the bulb which way they install? Does it matter? Thanks!

[@HeadlightRevolution]

4 sided bulbs will not focus properly, if you're going to run them it doesnt really matter how they face in there.

[@SS-gc6bp]

Can I change the bulb only on the same fitting/housing on a fiat 500 or do I need a new housing ?

[@HeadlightRevolution]

You can just change the bulb!

[@DanielLee-qy1yu]

Thanks Bro Really helped

[@HeadlightRevolution]

No problem 👍

[@takeapieandrun]

Converted my motorcycle from H7 to H4.. needed to know which way the shield faces. Thanks

[@HeadlightRevolution]

The shield should face open side up!

[@eddiemaranan6790]

Thanks

[@FlamJongUn]

Could you please in the future test "Nighteye" led series? The black ones with CSP chips. I've used them in dozens of cars and no customer has complained so far. Light output seems okay, cutoff great, but I don't have a lux meter at the shop. H4 and H11 were the best so far, comparing to other local shops' chinesium bulbs. Nighteye are 1:1 same as halogen design, and I tore one apart to see the build quality. I was pleasantly surprised! If you want to see pics and maybe have them in your comparisons I can upload the photos on imgur and send you the link of where I bought them. I will only send the link to Headlight Revolution so please people don't ask for their competitor's link. Thank you Edit: The bulbs I'm referring to are exactly the same as unnamed bulbs with the black heatsink on the far right.

[@jerrysetiowiyono6514]

Nighteye brand was change to novsights

[@FlamJongUn]

@@jerrysetiowiyono6514 they're competitors I think but I'm not 100% sure

[@socal_gambler]

Are you going to do a H11 video?

[@ironhorsegladiator5034]

The exposed side not covered by the plastic insulation is okay?

[@HeadlightRevolution]

Yep!

[@tjbay13]

no mention about the decoders though - why they exist and how to plug them in.

[@HeadlightRevolution]

They plug straight in, we have plenty of videos covering these! 🙂

[@emmanuellopez4651]

I recently replaced my headlights and tail lights in a Mitsubishi Outlender 2008 and now the ASC OFF light turned on. Do you think a resistor could fix the problem? Thank you in advance.

[@HeadlightRevolution]

9/10 a resistor or PWM Module is going to fix those issues! Shoot us an email, happy to help - [e-mail]

[@aziaazia540]

I have 2016 Nissan Sentra I try so many LED light it doesn’t fit to the base of the headlight. I used H11 led still doesn’t work what do you recommend think appreciate

[@HeadlightRevolution]

Please reach out to our customer service team so we can get some pictures and match something up for you! 218-755-5200 [e-mail]

[@parthap2944]

Please tell me how to Install an LED headlight in Yamaha FZ V2 with upper and lower beam properly working .

[@dipankardas1760]

Have you done any video or comparison of hikari ultra led h4.

[@101shadowstar]

I have a 01 pathfinder so I just wanna know what do I do wit the wires feels like it’s not all gunna fit

[@HeadlightRevolution]

They can usually be tucked into the headlight housing, but each application is different!

[@owindustry]

Thanks

[@HeadlightRevolution]

🤘

[@marko9138]

Will this work with the headlight leveling dial on a 2020 Toyota Tundra?

[@abdulwahidchangazi]

Please review the high beam offroad (drifter) headlights ... Thanks

[@HeadlightRevolution]

We'll add them to the list!

[@scottbush2486]

I’m here cause my Harley has one and the socket needs replaced

[@spydernutz]

On a Toyota Fj Cruiser how do you reinstall the rubber boot with LED bulbs. The heat sink can't be covered. Thanks

[@HeadlightRevolution]

I would suggest reaching out to our CS team so we can go over some options with you! We have some extended dust covers available! 218-755-5200 [e-mail]

[@arkhamvida9479]

My 2011 Kia Soul doe not have a dust cover, but an overall cap that goes over the light mounting. What options do I have to fix this? Do I put the cover on again? Or leave it open? I didn't see anything in your video about this.

[@HeadlightRevolution]

No need toadd one if it doesnt come with one!

[@milesberru2801]

Which led is the bright and low on the H4 9003 LED Bulb?

[@HeadlightRevolution]

GTR Ultra 2!

[@erickpalos23]

You mentioned a shield, how about if my new led buld doesn't have it? Should i just place it facing horizontal?

[@HeadlightRevolution]

You should still place that so that the LEDs are facing left and right! It is very rare that there is a housing that needs them aligned in a different position!

[@paramveersaanj7307]

After installing which side led up or dowm

[@HeadlightRevolution]

The LEDs should face left to right.

[@alejandrolucero147]

Can I use the 9003 h4 sylvania for headlights even if it says fog use only in va I am blinded by people's leds

[@HeadlightRevolution]

If your OEM Headlights use a 9003/H4 Bulb type, then yes you can use the Sylvania bulbs.

[@bongwoophet]

would the h4 fit my 2007 honda vtx 1300c? Alla Lighting thinks it may fit. Please advice and thank you per request.

[@HeadlightRevolution]

Hey Robert! We can help, please email us with photos if you can so that we can help you! [e-mail]

[@tthoy7338]

Is it absolutely necessary to re-install the OEM rubber boot over the H4 LED because if I do the rubber boot will cover over the cooling fins. The instructions do not say to re-install the OEM rubber boot. Do I really need the rubber boot at all? It will certainly run much cooler without the rubber boot

[@HeadlightRevolution]

You will definitely want to use that OEM Dust cover, that will keep the majority of the dust and debris out of the housing, and will allow for your headlights to last longer! Let us know if you have any other questions, we are here to help!

[@seangowan7441]

Do you have a video on the H7 headlight bulb?

[@HeadlightRevolution]

Not specifically on H7, sorry!