How To Tell If A Headlight Is Bad - Testing A Headlight Bulb 

Video starts at 4:00

Prince William after hours.

Just learning how to use my multimeter so I can make sure I everything is cool with my fuel pump wire as I put it back together. I also looked this up because I want to make a test light and had a bulb I was going to use but wanted to make sure works before I make it. Thanks for the tutorial!

I thought i was checking my headlight bulbs the wrong way. But you explain it exactly how i did test mine.Thanks for this Great video👍👍👍👍👍👍💪💪

Very useful. I thought my bulb was bad, but the filament looked OK. So before heading out to the store, I said there's gotta be a way to check the bulb. Found your video and confirmed the bulb was actually good, it was just that some connections weren't tight. Thanks for the video.⭐

Great video, I have always been lucky enough for stuff to go out and filaments stay in tact. Even my fuses tend to look perfect when they're done.

Thanks, this helped me fix the headlight on my 1973 Harley.

Heading outside with my DMM and third bulb. Thank you for the much-needed testing info!

Thank you, wouldn't have a clue how to use my volt meter and you explained what settings I need perfectly/. Now gotta fin what to do it when i turn my headlight on and I don't have power!

Awesome video, very detailed. Makes complete sense about the complexity of electronics 👍 most times I hook a 12v power supply directly to the bulb, but the multimeter is definitely the correct way to do it

It looks like the guy that installed the xenon lights in my car was working in the dark because the installation is so messed up. I will test everything tomorrow. Nice informative video by the way, straight to the point.

Awesome video bud🔧 Anytime I get into electric work it turns out to be a shocking experience🔧🔧 This is a video I take very seriously for just that reason! Thanks🔧🔧🔧

Loved your video. It was a great help to me. Thanks and cheers from Toronto, Canada.

Thanks, I didn't expect that this way you could check it.

Very clear and very, very helpful... thank you

My eBay fog lights stopped working I’m assuming it’s the bulbs so I’ll be doing this. Thanks a ton

“Bumpin my gums” def gonna be using that one. 😂 Thank you.

My left turn signal light bulb went out. Went to auto zone to buy a replacement. Worked perfectly. Now, I took a look at the old one and it doesn’t look bad, everything is in place, I even tested it for continuity and that works too. So how come? Any ideas? I’m starting to think my dash light might have that issue since it’s not working at the moment but tested the light bulbs and it gave me a reading. Any other method to test those? Thanks

Good, informative video. Thank you.

This video is so helpful and professionally done. Thank you.

Thanks alot brother 🙏🏽

love those eye damaging headlights in ur Landrover!

Short & precise!! Thank you!!

What's the next step if there is no power to the electrical connector?

helped a lot, thanks

Very nice video ,thanks

Good thing you are the only person smart enough to do electrical work. Basic electrical work is not that complicated . So must took you years to master getting the light to glow!!

Thank you! This is exactly the information I needed. Btw, excellent presentation, informative and easy to follow.

thank you for honest opinion that car electronics tend to be complex and most of the time not for amature diy-ers. I am one of them and I always wanna make sure to always go to professionals for things that sound complex and way off my amateur diy-er skills

i just learned so much

Very helpful video, thank you. I subscribed. 👍I have a question, i have a 2012 honda crv exl and both of my high beams stopped working at the same time. It's only one bulb for the lows and highs, if i put a meter on my headlight plug-in and turn the key and switch it to my brights is that how I need to determine if my switch or connector is bad? Will the meter give two different reading for the lows and highs? All the fueses are good, but I can't find a relay for my headlights. Thank you

Thank you

Great info. Thanks.

Hi! will having a lower voltage affect how bright the light would be? I've been having troubles with my car's low beam, we've already tried swapping out the old halogens with Philips Ultinon G2 LEDs. The lights only turned white, but it didn't seem like they got brighter.

just great 👌

should the headlight connector (Pigtail/PowersuPPly) always read 12v on every vehicle?

This is the info that I needed, so thanks for that. But I almost gave up because there's WAY too much narrative.

what wuld do xenon bulbs with out ballast? me car runs for years great but sudenly it started self acelerating I suspect arcing or relays interact with xenon or dual filament buls posibly alternator back fead problem. So me question Is can I use diodes on xenon bulbs or potenciometer or dimmer to determine where is the problem? In other words me engine trothel cabel gets magnetised the metalic springs got contrapted leaveing me at full trothel and that is dangerouse. Me car us old Opel from the 80s tipical GM lay out with hei ignition and I only have positive linear voltage regulator. So need advice how to see where the problems comes from static isnt mentiomed in repair shops. Or with what is static meshured? And yes me alternator has no diode in the dash board and oddly enough the fiel wire from alternator also is split wire cinected to me 4pin relay pin 86 for windscren defroster. So Im preaty much confused what to do here I disnanteled all me wire harnest It looks like desaster so I want to build independent circuets to by pass thise mentioned problem what fuse you recomend to use I want head light seperate and rear lights to be seperare what diode radings shuld I use for me relays and lights?

Fantastic video !!!!!! Ty

i have two LED bulbs..one of them is flickering and the ommeter reads 067.3, the good one reads 072.5.. i switch sides🔄 on headlamp and still flickers.. is it a defective buld by the ommeter reading... it lights up but after a while it blinks and flickers on either side of the cad headlamp...

So it has to be 1 ohm from base line? Cause my reading on the bulb says .7 I think that’s bad

Sir, how about h4 headlight ? Thank you sharing

Thanks for the down & dirty 👍🏻

Bless your heart

Very useful video.. thanks

PS Thanks for making the video

Anyone know how to test a xenon headlight? I do this step but the headlight just flashed on and off instead of staying on.

You poked the 2 multimeter probes into the bulb socket, but there are 3 different wires in the bulb socket.

You look like Prince William. You wouldn't happen to know pinouts for sylvania 9000vx bulb would you? Lowbeam on drivers side not working. Replaced bulb and it's not working. I'm about to take passenger side bulb out (which I know works) but I have to remove battery to get to it. Sylvania's site offers no information.

1. Bad bulb = NO continuity. 2. Good bulb = continuity. Thanks.

is it just me or do you actually look like a more chunky verion of Prince Willian? 🙃

What if I test the connector and I'm getting like 1.3 and it's fluctuating. Does that mean the connector is bad?

Your subtitle blocks everything

Udaya💡💡

Okay demi god

I gave up after 3 minutes too much yakking.

What. ????? All that to test a bulb ??? You're kidding right ????

sorry but ur name is william true ?.... prince william

Magic hahaha!!! I guess high school grade 6? hahahahaha