The Brightest T10 LED Bulbs

I talk a lot about headlights and the best and brightest bulbs to buy as replacements. But they’re not the only lights that need updating.

Our cars have a lot of other lights that we often forget about, the trunk, the glove box, and other interior and exterior ones.

The good news is that you can replace all of them with one bulb, and that’s the T10. Your factory-installed halogens are pretty weak in the brightness department, so why not upgrade to LEDs?

For over a decade, I’ve been testing and using bulbs from every supplier imaginable and can tell you the good from the bad in a heartbeat.

I recently tested a stack of T10s and narrowed down the three brightest. The Auxbeam T10 LEDs were my favorites. I’ve also listed a runner-up for best and a budget item.

My tip is to buy these in bulk so you’ll always have a replacement when any lights I mentioned go out.

Ready to learn more? Read on.

SiriusLED T10 LED Bulbs


Overall best

The Auxbeam T10 LED bulbs get my vote for the brightest because, at 800 lumens per set, that’s super-bright for a T10 bulb.

Brightness and Color Temperature

The Auxbeam T10 LED bulb at 400 lumens is more than 300% brighter than an average halogen T10.

The Auxbeam T10s come in four Kelvin colors, so they can fit where they’re needed on the car. Beginning at the amber-yellow end of the scale at around 2,800K, they go up to almost 15,000 blue, with 6,000K xenon white at the midrange. 

Neat Features

When using these as exterior lights, brake, and turn signals, for example, the 360° lighting angle means that you won’t dazzle the eyes of any oncoming or rear drivers.

Cooling System

Halogen bulbs have an issue with heating up very quickly. The Auxbeam LED bulbs are made with 3030 SMD technology, and they only use 1/10 of the power of halogens, meaning they keep much cooler.

Durability and Longevity

The Auxbeam T10 LEDs have a built-in constant current IC. What this does is ensures a consistent flow of light. If the voltage somehow becomes unstable, there’s a failsafe to protect the bulb from burning out.

They’re only 5 watts, so combined with the cooling technology, I’d expect these to last at least 30,000 hours. However, I’m unsure if they’ll make it to 50,000 as advertised.

They’re also IP68 waterproof. Feel confident driving in rainy, foggy, or snowy conditions with these bulbs installed.


Auxbeam T10 LEDs are a 1:1 size design against standard factory halogens. What I love is the No-Polarity design. No matter how you place the bulb into the fitting, it’ll work.

Installation took me around 5 minutes. It’s very straightforward. 

However, T10 LEDs are notorious for causing hyper-flashing (you can read why in my FAQs below), so I’m sure you’ll need to install a load equalizer too. My tests confirmed that.

My Tests

Auxbeam makes excellent vehicle lights, and I looked forward to testing the T10 LEDs.

I compared them at a distance of 20 feet against factory halogens which have a lux rating of between 8–16.

My halogens had a lux rating of 12. The Auxbeams were really impressive. A 46 lux rating! They’re almost four times brighter. 

The crisp 6,000 Kelvin color of the whites stood out for me. I love the clarity of the white of these Auxbeam T10s.

I got some hyper-flashing. But after installing the load equalizer, it immediately stopped.

What Other Drivers Are Saying

72% of Amazon drivers rate the Auxbeam T10 LEDs at 5/5 stars. The ease of installation and the improvement over halogens are the most positive comments.

Many drivers were disappointed that they didn’t last the 50,000 advertised hours. I’m unsurprised by this, as I didn’t expect they would, either.

Summing It Up

I’m a fan of the Auxbeam T10s. You can use them inside and outside the vehicle.  The 1:1 comparison in size to halogens makes for easy installation, and the brightness is excellent.

  • Plug and play
  • 800 lumens/set
  • 6,000K Xenon White
  • +400% brighter than halogens
  • Brightest overall T10 LEDs
  • 50,000-hour lifespan
  • 10W per set
  • 360° lighting angle
  • IP68 Waterproof
  • 50,000 hours appears overly optimistic

Alla Lighting Newest T10 LED Bulbs


Worthy Consideration 

My runner-up for brightest T10 LED Bulbs comes from Alla Lighting. They’re super-bright, but they have an issue which is why they’re not my top pick. My test results below will reveal all.

Brightness and Color Temperature

Alla Lighting advertises its T10 LED bulbs as 250 lumens each and claims they’re 500% brighter. I’m not sure they’re that good, but my tests did show an increase in brightness when compared.

This product comes in 6000 Kelvin color, which is xenon white. It helps to make objects appear clearer than the amber-yellow of the factory halogens.

At 1.5 watts, that’s higher than other brands, and I think that might cause the heat issues other drivers and I experienced.

Cooling System

Alla Lighting also claims its T10 LEDs have excellent heat dissipation as they’re equipped with an aluminum heat sink.

My tests proved that the heat doesn’t dissipate very well.

Durability and Longevity

Alla Lighting used technology to help stabilize the current. The T10 LEDs have a built-in smart IC driver.

They’re IP65 waterproof, which isn’t the highest level of 68, but they’ll still do ok if you’re driving in wet or foggy conditions.

Advertised to last 30,000 hours, I’m unsure if they will due to the heating issue, and I’ll get to that in a second.

The company provides a one-year guarantee on the T10 product, so I’d expect them to last at least that long.


With a CAN bus error-free design and non-polarity, plugging them in and switching them on should be sufficient. 

I‘d recommend installing a load equalizer to avoid dashboard notifications and hyper-flashing. 

My Tests

Despite only being 240 lumens, they’re surprisingly bright. My lux test rating was 37, a significant improvement over the 12 of my factory halogens. That’s not 500% bright by any means, but a good 300%.

So to the problem with these. Despite all the claims, they get hot, very hot, and very quickly. I can’t exactly pinpoint what’s causing this, except perhaps that the wattage is too much for the glass to handle. 

I’d be hesitant to use these in the glove box, for example, especially if storing papers or plastic items in there. For the exterior of the vehicle, they might be ok.

What Other Drivers Are Saying

Amazon drivers appear to agree with me. 79% rate the Alla Lighting T10 LEDs at 5/5 stars. That’s due to the brightness; they really do stand out against halogens.

The heat issue is a concern and is voiced by reviewers on Amazon. Some claim the bulbs are too hot to touch even after a few minutes of use.

Summing It Up

If you want some really bright exterior brake, license plate, or turn signal lights, the Alla Lighting T10 LEDs will give you that. As I said, I’d be concerned about using them for interiors due to the high heat issue.

  • Plug and play
  • 480 lumens/set
  • 6,000K Xenon White
  • +500% brighter than halogens
  • Brightest runner-up T10 LEDs
  • 30,000-hour lifespan
  • 3W per set
  • 1:1 Original design
  • IP65 Waterproof
  • Get very hot, very quickly

Sealight T10 LED Bulbs


Brightest Budget

If you’ve only got $10 to spare and need to replace your interior and some exterior factory halogens, the Sealight T10 LEDs have you sorted. 

Brightness and Color Temperature

The Sealight T10 LEDs at 300 lumens each are super bright. It advertises that they’re 1000% brighter than halogens, and that’s a big claim. My tests didn’t rate them that high, but they were still far superior.

A Kelvin color temperature of 2,700 is your stock-standard amber-yellow, and that’s in line with factory halogens. Some people, myself included, prefer the 6,000K white color for more clarity, but this is sufficient for interiors and the exterior lights the T10s are used for.

Neat Features

I’m a fan of the 360° illumination, which is crucial as it doesn’t dazzle drivers in front or behind you.  These T10 LEDs have an excellent downroad beam, as you’ll see in my test results.

Cooling System

The aviation-grade whole aluminum body dissipates the heat 200% faster, allowing for very efficient cooling. 

Durability and Longevity

The hard shock and impact-resistant ABS material used to make these T10 LEDs allow for a more stable light output.

The cooling system works and keeps the heat away from the bulbs. Sealight advertises 50,000 hours of life. I’m yet to see an LED achieve that, but the average of 30,000 is highly likely.

The IP67 waterproof rating means you can confidently drive through rain, fog, or snow and not damage the bulbs.


These are true plug-and-play. They’re non-polarity, so it doesn’t matter which way you install them. The only thing is that they’re slightly bigger than the factory halogens, so they may not fit some older models.

As with the others, I suggest you install a load equalizer to avoid hyper-flashing.

My Tests

Once again, my standard test is 20 feet. My factory halogens gave off a lux rating of 12.

The Sealight T10 LEDs were a surprising 45 lux, just one off the Auxbeams. So no, they’re not 1,000% brighter than the halogens, but almost 400%, and that’s more than you need.


I’m not a massive fan of the amber-yellow Kelvin color; I do prefer white. But I noticed these leaned more towards yellow than amber, which may not suit everyone.

One noticeable difference was that these T10 LEDs increased my viewing distance by 200% over the halogens.

What Other Drivers Are Saying

Amazon drivers rank the Sealight T10 LEDs at a total of 4.4/5 stars.

The positives were almost all about how much brighter they were and super easy to install.

It appears the negatives match what I discovered. They don’t fit all models, and the Kelvin color is more yellow than amber-yellow.

Summing It Up

The Sealight T10 LEDs are $10 a pair, and you get excellent brightness. I wish these companies wouldn’t make claims like 1,000% brighter and a 50,000-hour lifespan, as they’re not true. For the price, and if you’re ok with the amber-yellow color, these are worth stocking up on.

  • Plug and play
  • 600 lumens/set
  • 2,700 amber-yellow
  • +1000% brighter than halogens – advertised but unrealistic
  • Brightest budget T10 LEDs
  • 50,000-hour lifespan
  • 360° Illumination
  • IP67 Waterproof
  • Don’t fit all makes and models, especially older vehicles
  • Kelvin color leans more toward yellow than amber-yellow

Photo of author

Richard Nickleson is the author and owner behind Headlight Reviews. He first started the site as a hobby to share his insights on car parts and specifically headlight bulbs, but it soon ballooned and now he writes on all topics surrounding headlights bulbs. If you've got a bulb question, contact Richard here.

Leave a Comment