Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor CANBUS Error Free Anti Hyper Flash T25 3057 3457 4157 Bulbs White and Amber 600% Super Bright Turn Signal Light DRL Parking Light

So far working without issue on the front of my 2005 Cadillac CTS-V. When in daytime running mode they switch to low brightness and when on blinker at full brightness then back to daytime mode. Very bright. I have regular bulbs in back so not sure if using rear led bulbs would cause these to hyperflash. Install was fast and easy on my car others may differ.

Strongly recommend they are super bright and the switchbacks look much better than the original lights

These fit nicely in the front turn signal bulb mount in my 2019 F-150. Much brighter than the stock halogen and provide a white DRL with a yellow flashing turn signal.

Very bright 4 star

I recently purchased the running light and turn signal light combo for my vehicle, and I must say, I am thoroughly impressed with its performance and functionality. This product truly offers the best of both worlds, providing a bright white running light for enhanced visibility during normal driving conditions, as well as an attention-grabbing amber turn signal light for when I need to indicate a lane change or a turn. One of the standout features of this product is its seamless transition between the white running light and the amber turn signal light. The transition is smooth and instantaneous, ensuring that other drivers on the road can easily recognize my intentions. This has significantly improved the safety aspect of my driving experience, as I feel more confident that my signals are clearly communicated to those around me. In terms of brightness, both the running light and turn signal light are exceptionally bright, making them highly visible during day and night. The white running light provides excellent illumination, enhancing my visibility to oncoming traffic and pedestrians. Meanwhile, the amber turn signal light grabs attention with its vibrant color, ensuring that my intentions are noticed even in busy traffic situations. The build quality of this product is also top-notch. It feels sturdy and durable, capable of withstanding various weather conditions and vibrations on the road. I appreciate the attention to detail in the design, as it seamlessly integrates into my vehicle's aesthetics without looking out of place. Overall, I am extremely satisfied with this running light and turn signal light combo. Its ability to switch between the white running light and the amber turn signal light is a game-changer for me. The brightness, durability, and ease of installation make it a fantastic choice for anyone looking to enhance their vehicle's lighting system. I highly recommend this product to fellow drivers who value safety and versatility on the road.

Used similar model bulbs for 2023 WRX (BASE + PREMIUM MODELS ONLY) and it fits. First set lasted about a year and a half before experiencing hyper flash recently on one bulb. Other bulb lost hold and fell off of socket a few times last year. Had to use electric tape to hold at one point. Overall, it’s a good product if you don’t want to run on the OEM look. Update (APRIL 2026) Bought these back in Jan 2026, although it fits and looks nice, this brand did end up falling out into the housing twice in back to back days. I even wrapped it in electrical tape and it still didn’t hold. It is front heavy and the clips aren’t as secured as OEM. I ended up switching back to OEM bulbs due to the nature of not wanting to deal with this falling out over and over.

Been on a search for LED that are switchback white and amber and that would help prevent Hyperflash. These worked well in the beginning but after just using for a few signals to turn the bulb out error came on and bulbs began to hyperflash. Dodge journey 2014 seems to be on the list of the 1% that are sensitive to resistance being created on turn signal bulb. I contacted the company and they said they would help me by providing resistors to help with the bulb out error. I wanted to avoid this because the wiring for the bulbs are wrapped and are a hassle to remove the harness taping. They provided the pre wired resistors as a solution and after installing using the resistors the error has disappeared and only came on once after having hazard signal on. You have to be careful with the resistors as they do get really hot. But so far no problems.

Ordered 2 sets for my truck. Good for about 9 months. All of a sudden one bulb only had half illumination and hyper flashed. Reached out to auxbeam support through Amazon and never got a response. Bit the bullet and ordered another set and proceeded to replace the defective one. Here we are 3 months later and one of the brand new ones I put in is already messed up and hyperflashing. Holding my breath that auxbeam will make at least one of my purchases right. I’d steer clear. Wish I would’ve spent the extra money and bought lasfit. I’ve had them in my car for 3 years with no issues. Edited December 29,2024, Auxbeam did reach out and send a replacement promptly after the review.

NO HAY ERROR EN EL TABLERO AL INSTALARLAS.

My car is taurus, I have installed to my car, it is working fine dual function are working, it is really very nice, and recomended, I will observe until 2 week for the last review

Looks great

Yes, it's not as bright as I expected. I had auxito for a similar price before and the brightness is 2x more than this auxbeam.

Great product ! Great color ! As I was looking for a non blueish led output !