3157 HP24 Dual-Color LED (pair)

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Availability: In stock

Ships Monday, February 15 if ordered in the next 1 day, 16 hours and 22 minutes!

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3157 HP24 Dual-Color LED (pair)

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3157 HP24 Dual-Color LED is a direct replacement for any 3157-size front turn signal bulb. This is a unique, specialty item. When on as normal, with parking lights, it shines a nice, pure white color, and when you activate the turn signals at any time, it flashes an amber color. Two colors, for an awesome lighting effect!

The installation is 100% plug-and-play, just replace your factory bulb. The bulb may blink faster since it uses less power, and your vehicle thinks the bulb is out- to fix this, please see "hyperblinking" section below.



The HP24 bulbs use 16 amber, and 8 white LEDs. They are very high-power chips. More importantly, the amber is a custom-made LED chip. Instead of a standard amber, which emits a low-energy amber light, the amber LEDs on this bulb are downconverted from blue, just like a standard white LED. It is extremely bright amber. Equipped with full aluminum body for durability and advanced digital latching circuit for color control. 6000k, Cool White to match your HIDs or other LED applications.

Included in your order is TWO BULBS.


Your vehicle may be able to use a specialty bulb known as "switchback." This bulb is only suitable when there is a clear reflector. Normally, your front turn signal lights up half power amber when you turn on your headlights, and flashes full power amber when the turn signal is activated.

By using this dual-filament design, along with an integrated controller chip in the bulb, you can get a very cool effect: the switchback bulb lights up white when your headlights are turned on, and flashes amber when you use the turn signals. When you switch the turn signal off, it "switches back" to white. This allows you to gain a uniform white appearance in the front of the vehicle at night, while still having amber turn signals.


172 Lumens (maximum)

Lumens: BUYER BEWARE! Most sellers just provide "calculated" lumen numbers, based on the maximum potential brightness of the LED chips on the bulb. For example, if a bulb has five 10-lumen chips, they will rate it at 50 lumens. However, this is not accurate, as the design of an LED bulb does not get rid of heat fast enough to run the LEDs at maximum.

These "calculated" lumen ratings are much, much higher than the true, measured light output, so it will look like competitors' bulbs are brighter than ours. This is because Diode Dynamics does not provide inflated "calculated" numbers; we believe it is misleading. We test the actual brightness of the bulbs in our lab, to provide real lumen output measurements. Our measurements are accurate, but they are usually much lower than the misleading "calculated" figures. Please click here to learn more about LED brightness measurement.



LED Components. Diode Dynamics uses only the highest quality LED chips in the production of its bulbs. This means we use only brand-name suppliers such as Epistar, Cree, Osram, and Samsung.

While our bulbs may look the same as others on the market, most copycat bulbs use economy-grade LED chips in order to reduce costs. This greatly reduces the reliability and overall brightness of the bulb when you compare it to Diode Dynamics.

Construction. Although LED technology allows for extremely long bulb life, the market is flooded with cheap LED bulbs that fail prematurely due to inferior construction. The worst enemy of LEDs is excessive heat, and when bulbs are not designed properly, they do not disperse heat as well, leading to premature failure.

Off-brand, cheap bulbs exhibit poor solder uniformity, high levels of flux in the solder, uneven chip placement, low-gauge terminal wires, poor assembly, and bulbs held together with inferior adhesives. At best, solder joints will crack and fail on low-quality LEDs after a few weeks of use. In the worst case, these bulbs can damage housings as the extra flux and adhesive evaporates and creates a residue on the lens of the housing.

Diode Dynamics bulbs are produced with modern, computerized equipment, and only the best materials, to ensure complete uniformity, high quality, and long bulb life.

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  1. Great product Review by Russell

    Ordered up these lights with high expectations. Well I wasnt disappointed at all. These lights are very bright and work like they are suppose to. I even have tinted lenses and they still shine bright. My duramax only needs 3rd brake light LEDs and my front sidemarker lights and my truck will be 100% diode dynamic out. Inside and out. Thanks again guys! (Posted on 12/20/15)

  2. worst than ebay bulbs Review by Myke

    Four times the price as an ebay bulb and lasts half the time. Have had 2 go bad in 4 months and one of those came like that to begin with. Bad sign. They do however look better when lit up than other bulbs I have had but thats only when they actually work. Customer service has been helpful so far as well which is a plus. (Posted on 8/18/15)

  3. Color Changing signals Review by Flatline

    I have a 2000 Buick. I have added these and other Diode Dynamic lights and the looks are astonishing and the price just right. During daytime the running lights are yellow but once light sensor detects night they switch over to 6000K center lights. Had to add resistors to stop hyper blinking. Change is Night and Day.
    Cant say enough good things about these lights they are Great Value and a definite head turner.
    (Posted on 8/6/15)

  4. Great lights! Review by Adam

    First off these gotta be the coolest looking LED lights ive seen while turned off. Also, the brightest and most consistent while turned on.

    Works as to be expected, and the color output is great. Worth the coin I would say. Warranty service is wonderful to boot! (Posted on 8/3/15)

  5. Great product Review by Izzy

    While more expensive than most they are the best quality and highest light output of any marker bulb I've tried. Gives the car a totally different look at night. I highly recommend them! (Posted on 7/5/15)

  6. Good quality/few quirks Review by Streetlethal1000

    The light output on the new version doesn't seem as well balanced as the old version, but they do seem better quality. I paid a few dollars extra for the brighter lumen version as well. They blink well but once in a blue mood may get stuck on orange or white may not click back on. After they turn off and on again, they seem to be fine. Just be carefully how they fit into the sockets. Make sure they fit tight. One bulb actually fell out inside my headlight housing for my 2013 accord. Side note: The customer service is outstanding! (Posted on 6/1/15)

  7. Great Review by Corey

    Great quality. Not as blue as I thought they would be but work great (Posted on 5/24/15)

  8. Pretty much the best turn signal Review by brooks

    I had previously ordered the wrong signal and called DD to get some help. They are awesome with their customer service by the way. I was told that these were the only ones that would work with my 07 Camry, but that my car wouldn't be able to work the dual colors. Meaning they would just always be amber. I didn't care about the dual color, so no worries. I had already changed every available light out with DD lights.

    I just installed them this week and guess what. Dual color! They are awesome. They are super bright and I have to say the dual color effect is quite cool. Thanks again for another awesome light. (Posted on 5/18/15)

  9. Challenger Swichback LED's Review by Dodgehemi61

    These switchback LED's sure add to the retro look on modern Challengers. These are sure a must have to any Challenger. Shipping was fast, with great customer service.
    Thank you for a great product. (Posted on 5/17/15)

  10. Unreal! Review by J

    These have to be some of the greatest bulbs ever created. Such a bright output that even lights up the sides of the road when I'm driving. And the switchback is unique sets my car apart from everyone else's. The design and construction is what impressed me the most. Sturdy aluminum casing and terminals. Highly recommend! (Posted on 3/27/15)

  11. Don't Get Em anywhere else but here. Review by Shane

    Got a pair from another company and they were the type one bulbs to which was not what i wanted and they flashed a blueish white to a red when turn signal was active, Basically made it look like a cop. So I called diode dynamics to make double sure that their product was a type 2 and flashed amber and I was very happy with both the product and service I received. Would recommend! (Posted on 7/30/14)

  12. amazing Review by joejuice

    The Shipping was super fast. .. the lights look amazing and bright. . They work flawless. . Definitely order from them again. (Posted on 6/29/14)

  13. Much brighter than cheaper version Review by Nathan

    Very much worth the additional cost these are much brighter and very visible in bright sunshine. Highly recommended and you will need the load resistors on a Charger so get them as well. (Posted on 6/15/14)

  14. Awesome bulbs Review by Travis

    These are a great way to customize your car. Very bright and white to get rid of the amber running lights. The bright amber turn signals make it a lot easier for other drivers to see the turn signals. These bulbs are a great value for the price and built with a lot better quality than other bulbs I have tried. Very highly recommended. (Posted on 5/27/14)

Worry-free warranty

  • - Full 3-year warranty on all products
  • - No waiting: we usually send new items out with a return label (US customers only)


You will get quick help from our trained staff for any issues.

All Off-Road Lighting also carry a limited lifetime warranty.

For further details, please see our full article.

Domestic (US) Customers

  • - Just $5 per order with our Diode Delivers program
  • - Same-day shipping for all orders placed by 12:00 PM CST (or until 4 PM with rush processing)
  • - USPS, for delivery in 2-4 days (on average)
  • - Express services are available, see exact pricing at checkout
  • - Fully Insured


International Customers

  • - We ship to all countries via standard mail
  • - Usually around $10 for LEDs, or $25 for HIDs.
  • - Choose your service on checkout to see exact prices:
  • - USPS 1st Class: 2-5 weeks
  • - USPS Priority: 1-2 weeks
  • - Express EMS: 1 week
  • - Please email us if you are unsure about shipping to your country.

You will receive updates from our site when your order is shipped, along with a unique shipment number to ensure that your order is correctly accounted for. This allows you to easily reply to us if you have any concerns.

Whether your order is big or small, it is tested through many run cycles, and each bulb is tested before shipment. Every single bulb. Every time. And if anything does go wrong, you can rely on our industry-leading warranty for worry-free replacement.

If you're not happy with your items, we want to make it right. So we have some pretty awesome return policies:


30 day return policy. All customers have 30 days from the date of original order shipment to return items.

Full refund, no fees. At Diode Dynamics, we offer free returns. That means no restocking fees, no administrative fees, and no hassle!

 Free return label. If your original order was over $50, you get a free return label for your items (US customers only). If your order was less than $50 or international, you can send the items back through your preferred method.


Within 30 days: If your original order was over $50, you can get new items shipped to you with a return label (US customers only). If your order was less than $50 or international, we can send you the new items first, but you are responsible for returning the old items.

Within 90 days: Any item can be returned for exchange or store credit within 90 days. The buyer is responsible for the cost of the return shipping, and must first return the old items. We'll still cover the postage for the new items.


Please note: due to the nature of custom acrylic pieces, we cannot offer any refund or exchange for returned custom acrylic items.


To make a return or exchange, please request an RMA, or give us a call. When we get it back, you will be notified and credited appropriately.

Again, all returns must be approved, with an RMA. This is so that we can process your return as quickly as possible when we get it. If you would like to return an item, please Request an RMA. Please include as much information as possible about the reason for return.

Alternatively, you can also send us a message, or give us a call!