Diode Dynamics 3157 HP24 LED Switchback (pair)
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.
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.