3157 Switchback LED Turn Signal Bulbs | Built-In Resistors | White/Amber Color | No Hyper Flash
3157 Switchback LED Turn Signal Bulbs | Built-In Resistors | White/Amber Color | No Hyper Flash is backordered and will ship as soon as it is back in stock.
Description
Description
Premium Dual-Color 3157 LED Switchback Lights With OEM-Grade Reliability
Upgrade your front lighting with a 3157 switchback LED that gives you two colors from one bulb. White light handles the running light or DRL function. When you activate the turn signal, the bulb changes to bright amber.
Once the signal ends, it automatically switches back to white. This gives your front lights a clean white appearance during normal driving while keeping the amber signal easy to notice.
The switchback lights use a built-in resistor on the turn signal circuit. You do not need to add separate load resistors for the listed application. The plug-and-play installation eliminates common issues with typical switchback LEDs, such as hyperflash, overheating, and error codes in 99% of vehicles. The Super CANBUS design also works with CK and non-CK sockets.
Key Benefits
Dual-Color Switchback Technology
Each 3157 switchback turn signal bulb contains 54 SMD LEDs for 360-degree light coverage.
18 LEDs produce 6000K white light for running lights and DRL use, while 36 LEDs produce 3500K amber light for turn signals.
The white light changes to amber as soon as the turn signal activates. When the signal finishes, the bulb returns to white.
This is what makes our LED switchback different from standard single-color turn signal bulbs. You get a white running light and an amber turn signal from the same bulb.
No Hyperflash, No Error Codes
Our engineers design these 3157 LED bulbs with a built-in resistor placed only on the turn signal circuit, not on both. This design protects the bulb from excessive heat, helps prevent housing damage, and ensures reliable CANBUS performance without external load resistors.
The built-in resistor means you don't need to install separate load resistors for the listed application.
Intelligent Cooling for Longer Life
Each 3157 Switchback bulb includes a full metal heatsink and a built-in silent cooling fan.
The fan activates when the high-filament turn signal circuit is active. This helps manage heat during amber signal operation.
The cooling system works alongside the single-filament resistor design to improve heat management during repeated turn signal use.
Bright, Full-Coverage Output
Each 3157 bulb is 24W and produces 1200 lumens of strong white running light and bright amber output. This enhances visibility and nighttime safety.
The 360-degree LED layout spreads light around the bulb rather than concentrating it in one direction. The white LEDs produce 6000K light, while the amber LEDs produce 3500K output.
Simple, Plug-and-Play Installation
These 3157 switchback bulbs are designed as direct replacements for compatible factory lighting.
Installation takes about 10 minutes. No splicing, external resistors, or vehicle modifications are required for the listed application.
Remove the factory bulb, install the new bulb, and test both lighting functions.
Note: Your socket must have three wires for proper dual-color functionality. Two-wire sockets will only display one color. Most 3157 applications use 3-wire systems compatible with both white and amber operations.
If you are unsure of fitment, we can confirm compatibility for your specific vehicle.
Why Choose Underground Lighting
We engineer our switchback LEDs for real-world conditions, bright output, stable CANBUS operation, safe heat management, and long-term reliability. Our single-filament resistor design and smart cooling system set a higher standard for durability and performance. Every product is backed by expert support and built to exceed expectations.
Need help choosing the right switchback turn signal bulbs for your vehicle? Contact our lighting specialists online or call us on (561)-918-5225.
CA Residents WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Frequently Asked Questions
Frequently Asked Questions
Frequently Asked Questions (FAQ)
1) I am not sure of making an Online Purchase.
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2) Can I make a Custom Order?
Underground Lighting is dedicated to you. We believe in offering the exact car lighting products you require. Please call us on (561) 918-5225 or chat with us online to discuss your custom automotive lighting needs.
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There are many ways to make payment. You can use PayPal or credit cards from Visa, MasterCard, American Express, Discover and several other options to buy LED, HID bulbs and conversion kits from our website.
4) When will my Order get shipped?
Underground Lighting ships your products within 24 hours of the time of placing the order.
5) When will the Products reach me?
If you are in America, you will receive your order in 2-5 business days. If it is an international order, we have two options for you:
USPS Priority Mail International – 6 to 10 business days
USPS Priority Mail Express International – 3 to 5 business days
6) Can I return the Product that I have ordered from you?
We believe in total customer satisfaction. If you are not 100% satisfied with the product, you can return it for a refund within 30 days after you receive the product. If you want to return the entire order or part of it, please contact us immediately. For more information on returns, please visit: https://undergroundlighting.com/pages/shipping-return
7) What is your Refunds Policy?
Customers are responsible for all shipping costs for exchanged/returns items. We usually charge 15% restocking fee for products that you may want to return. For more information, please check: https://undergroundlighting.com/pages/shipping-return
8) How do I claim Warranty?
If you believe that an item is defective, please drop in a mail: undergroundlighting@gmail.com Use “warranty” in the subject and provide us your phone number along with a description of the problem. We will call you immediately and help you solve the issue. Please visit https://undergroundlighting.com/pages/warranty to know more.
9) How to become a Dealer for Underground Lighting?
Underground Lighting offers high quality products that stand tall against other LED and HID products in the market. If you want to enjoy incredible margins and amazing sales volume, submit a wholesale inquiry form with us.
Frequently Asked Questions (FAQ)
Frequently Asked Questions (FAQ)
3157 Switchback LED Bulbs with Built-in Resistors FAQs
What is a switchback LED?
Switchback LED bulbs are specialized turn signal lights designed for dual-filament sockets. They operate in two distinct modes: bright white when running lights are active during everyday driving, then instantly switching to vibrant amber when the turn signal is engaged. Once the turn signal cycle completes, they automatically "switch back" to white.
This dynamic color-changing capability creates a premium, distinctive lighting signature while improving visibility for both you and other road users. The crisp white/amber contrast provides clearer signaling in all conditions, enhancing both style and safety.
Why does my switchback light up amber as daytime running light (DRL) instead of white?
This happens because your vehicle uses the high filament (turn signal circuit) for daytime running lights rather than the low filament, which is common in specific models like Corvettes and various Toyota vehicles. To get white DRLs instead of amber yellow, simply turn on your low-beam headlights. This will switch the power to the low filament circuit, activating the white LEDs for your running lights.
Do I need to add a switch for LED Switchbacks to work?
Our 3157 Switchback LED light bulbs work with your vehicle's existing electrical system - no additional switches needed. They automatically change from white (when running lights are on) to amber (when turn signals activate). These plug-and-play bulbs install in under 10 minutes with zero wiring modifications needed for most vehicles. They're energy-efficient, environmentally friendly, and provide an instant lighting upgrade for your car or truck.
Why do my 3157 LED switchback bulbs only illumine one color instead of two?
This typically indicates a single-filament socket configuration. For proper switchback functionality, your socket must have at least 3 wires. If your socket has only 2 wires, it's a single-filament application that cannot support color-switching capability. No switchback bulb will display both colors in this case. If your socket has 3+ wires but still shows only one color, check that the metal contacts on the LED bulb are properly aligned and make a solid connection with your socket terminals.
Warranty Information
Warranty Information
3157 Switchback LED Turn Signal Bulbs | Built-In Resistors | White/...
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no hyperflash love it super bright
The original set of 3157 switchbacks I purchased for my 2016 F250 had an issue with erratic flashing and flashing white every so often. Worked with Danny and he ended up sending me a different set that work as expected. Really love the all white light look on the 2016 F250 given that the turn signals are huge on this truck.
Installed on 2010 F150 in front turn signal/parking light and they work flawlessly. White while parking lights or headlights are on, yellow or “amber” whenever turn signal or flashers/hazards are turned on. Great product, can’t find another that functions like these. No hyper flash either. Awesome.
Absolutely great love the looks and easy to install highly recommended!!
Absolutely great love the looks and easy to install highly recommended!!
Replaced my front park/turning lights with these. Shipped and arrived very quickly. Super simple plug and play install. No hyperflash and super bright. Worth the money. In the picture, passenger side (left side) is the incandescent bulb, driver side (right side) is the new LED switchback this review is for.
They work fantastic. When I use the turn signals I get a “parking light out” error, but as soon as I turn them off the message goes away, and they work like normal. Worth the money in my opinion, and very pleased with what I got!
They work fantastic. When I use the turn signals I get a “parking light out” error, but as soon as I turn them off the message goes away, and they work like normal. Worth the money in my opinion, and very pleased with what I got!
White could be a little brighter, but I still like them. They are the only built in resistor switchbacks I’ve found. Definitely recommend if you want something like this without having to wire in resistors. Plug and play and no problems or hyper flash
White could be a little brighter, but I still like them. They are the only built in resistor switchbacks I’ve found. Definitely recommend if you want something like this without having to wire in resistors. Plug and play and no problems or hyper flash
Bright and great plug and play option.
Very bright and looks good no hyper flash.
Customer service was great- LED's are super bright, easy install!
Package received as promised and not damaged. Bulbs are bright perfect plug and play.
Brightest switchback on the market . Absolutely will be purchasing all my lighting for any of my rigs here
Product hasn’t let me down I bought 4 bulbs same kind 2 years ago and my lights fell out and took the bubs so I ordered more bc I was so happy with the product!!
Installed them on a 2014 Tundra and the brightness is insane!
Everything works great. Thanks for your advice and professionalism.
The install was fairly easy and did not take long. Light is bright.
The fans are really loud
I search all over the web for some 3157 lights that would not require a diode and luckily clicked on the Underground Lighting link. These are GREAT. They might be a little brighter than I excepted for the amber blinker, so be ready for that. The white running light is awesome!
Work Awesome, no problems nice and bright and very happy with the switchback leds
Super easy install and very bright, Almost too bright!
3157 Switchback LED Front Turn Signal Bulbs White Amber | Built in Resistors Dual Color No hyperflash
I bought from another vendor that stated that they had built-in resistors and eliminated hyperflash. They were not as advertised. When I talk to Danny he knew exactly the right bulbs I needed for my F-150. I installed them today and they work perfectly. I would recommend underground lighting to everyone who wants to upgrade their vehicles to any or all LEDs. This is the place to go!
3157 Switchback LED Front Turn Signal Bulbs White Amber | Built in Resistors Dual Color No hyperflash
I have these on both of my trucks now and I love them. Well worth the money
