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Underground Lighting  |  SKU: 7443r-Res

7443/7444 Red Brake light Bulbs, Turn Signal LED W/ Built in Resistors No Hyper Flash (PAIR)

Sale price $64.99 Regular price $69.99

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  • Plug and play, easiest installation on the market, no resistors needed.
  • Direct replacement bulb for Rear brake and turn signals.
  • Full metal heatsinking for reliable operation With a built-in silent Fan to cool.
  • Canbus Nonpolar and CK-compatible electrical design.
  • 1600 lumens per bulb.
  • 1 Year Warranty

Description

7443/7444 Red LED Brake Light Bulbs – Description and Overview

LED Tail Light Bulbs with Built-in Resistors – No Hyper Flash (Pair)

Best Performance in the Industry
Our ultra-bright 27W 1600LM 7443/7444 Parking, Brake, and/or Turn Signal LED Bulbs with built-in resistors are engineered to deliver maximum output with deep red illumination covering 360 degrees. Unlike other brands that place resistors on both filaments (which can cause the housing to melt or LEDs to fall apart), our CANBUS LEDs feature a built-in resistor only on the turn signal filament.

To further ensure longevity, we’ve included a cooling fan that activates only when the high filament is engaged, reducing heat during resistor use and protecting the LED from continuous heat exposure. This design eliminates hyper-flashing and prevents error codes, offering a direct replacement for factory incandescent bulbs—no extra resistors or components needed.

Best-in-Class Brightness
Each bulb features 12 high-performance 1860-style deep red LED chips and outputs 1600 lumens. This means your turn signals and brake lights will shine significantly brighter than stock incandescent bulbs.

Reliable Compatibility
These bulbs work with 99.8% of vehicles. While most vehicles will accept the LEDs without issue, some systems with highly sensitive computers may still require special handling.

Installation

  • Difficulty Level: Beginner

  • Installation Time: Approximately 10 minutes

  • Type: Plug-and-play — no slicing or complex wiring required

California Residents:
WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov

Need Help?
Questions about compatibility, installation, shipping, or warranty? Chat with us online or call (561)918-5225. Our team at Underground Lighting is here to help!

Frequently Asked Questions (FAQ)

Frequently Asked Questions on LEDs


Will LED Bulbs Damage My Car?

No. LEDs will not damage your vehicle if properly installed. In addition, you want to purchase the correct LED light that will fit your car. For example, if your vehicle has a CANbus system, you want to buy the right product and install it correctly to avoid any potential issues.

If your car was not originally designed for LED Bulbs, you can purchase a LED bulb and install them. They are safe and will not damage your vehicle as long as you buy top-quality products.

Why Are LED Lights Better?

An LED light bulb saves more energy, produces less heat, and has more light. In addition, it uses 85% less electricity than standard lighting. It is also a lower-cost product but has bright light with a longer life span.

LED light is different from incandescent light. Blue LED combined with yellow phosphor creates white light. The high efficiency of LED light makes it a popular choice.

What Is the Lifespan of LEDs?

LEDs have a long life span. When an LED is operating at 70% capacity, it has reached the end of its life span.

Incandescent bulbs have around 750 to 2,000 hours of light. In comparison, LED bulbs can have 50,000 to 100,000 hours of light, making them better investments.

Can I Replace Incandescent Bulbs with LED in My Car?

Yes! You can change your initial bulbs to LED in your vehicle. In addition, there are different places where you might want to swap out for LED lights. For example, you can change your headlights, rear license plate lights, interior door entry lights, rear brake lights, and more.

First, however, you need to inspect what type of bulb you need. There are different bulbs with various designs, so you must buy the right one to fit.

Second, different areas of your car may require special tools or specific parts to work properly. Once you have found the products you need, you’re ready to go LED.

Frequently Asked Questions about Turn Signal LED Bulbs (FAQ's)


Which color LED is best to install in my red lens taillight?  

Red LED is the best option to put in a taillight with a red lens. Red will give you a nice deep bright red color. Where white would make the light output look like a soft pink. 


My rear Brake light is also my parking light and turn signal will your LED work for all 3 functions?

Yes, as long as you buy the correct part number our led bulb will do all the same functions that your OEM bulb did.


 Are LED light bulbs good for eyes? 

Many people worry that the increased brightness of LED headlight bulbs will result in a shine that is too bright for others on the road. However, we feature lights that are specially designed to focus light in a way that will not blind oncoming traffic. Your Red LED lights from Underground Lighting contain the perfect balance of brightness, style, and safety on the road.

What is hyper flash and what causes hyper flash?

Hyper flash is where the turn signals or indicators on a vehicle blink at a much faster rate than normal. This can be caused by several factors:

  • Bulb Failure: The most common cause of hyper flash is a burnt-out or malfunctioning bulb in one of the turn signals or hazard lights. When one of these bulbs fails, the system detects a lower load on the circuit and increases the flash rate as a warning to the driver.
  • Installing an LED Bulb: When replacing traditional incandescent bulbs with LED bulbs in vehicles that were not designed for LEDs, you might experience hyper flash. LED bulbs use less power, and the vehicle's flasher relay may interpret this as a burnt-out bulb.
  • Faulty Flasher Relay: The flasher relay is responsible for controlling the rate of blinking of the turn signals. If it malfunctions, it can cause hyper flashing or erratic blinking. Replacing a faulty flasher relay can resolve this issue.
  • Wiring Issues: Damaged or corroded wiring can disrupt the electrical flow in the turn signal circuit, affecting the flash rate.
  • Incorrect Bulb Type: If the wrong type of bulb is installed, it can draw too much or too little power, leading to hyper flash.
  • Resistance Issues: Some vehicles use a variable load sensing flasher relay, which can detect changes in resistance. When adding additional lights or modifying the wiring, you might change the resistance in the circuit, causing hyper flash.

Why do I have hyper flash on the dash after installing LED turn signal bulbs?

LED bulbs draw a lot less power and current making the Body Control Module think the bulb is out.


Why do I still have hyper flash after Installing Underground Lighting LED turn signal with built in Resistors?

The most common reason is basic mistake many make. Make sure you start the vehicle and let the engine run before testing your turn signal for hyper flash. Starting the engine turns on the BCM so the computer can see the resistance in the bulb.

Do I need to have Underground Lighting Led turn signals in the front and rear to not have hyper flash issues? 

The short answer is no, you don’t. However, you need to have resistors on every turn signal bulb that doesn’t have resisters built in. The front and rear turn signals are tied together so you can not have resistors in the front and not the rear for example if both front and rear are LEDs.


To find more questions and answers, please visit our FAQ Page 

Warranty Information

This product has a 1 year warranty

Payment & Security

Payment Methods

  • American Express
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  • Discover
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  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

WHAT'S INCLUDED

BULBS :
2X Red Canbus LEDs With built in resistors
WARRANTY :
1 Year Warranty

COMPATIBILITY

CROSS-COMPATIBILITY :
7441, 992, 7440, 7440ST, 7440AL, 7440LL, 7440A, W21W, 7440, 7444NA, 7443, 7443ST, 7443LL
FITMENTS :
Parking, Rear Brake and Turn Signal
CIRCUITS :
12V
BLINKER CIRCUITS :
No Resistors Required

TECH SPECS

WATTAGE :
24W
LENGTH :
2.4"
DIAMETER :
.83"
INTENSITY :
1600lm
  • Talk to a Specialist

    Call us (561) 918-5225

  • 45 Day Return Policy

    Hassle-free & easy

  • Free Shipping Promotion

    On orders over $89.99

  • Same Day Shipping

    If placed before 2PM EST

  • 5 stars: 69 (85%)
  • 4 stars: 10 (12%)
  • 3 stars: 2 (2%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
D
David Swantek
2016 Chevy Silverado 2500HD

Installation was smooth and easy and very bright and works great! I did notice that if you are stuck in traffic and moving slowly, they will hyper flash but doesn't last long. Love them!

A
Anonymous
Superb quality

After a lengthy R&D process on a modified harness, I now have 2023 ram halogen tails in my 2012. I like the look of the halogens vs the factory led. But the standard bulbs are lackluster. After your bulbs weee installed, it was perfect. Crisp, clean, and very bright!!!

T
Todd Gruber
Review LED’s with resistors

Happy with them & no hyper flash,as soon as i purchased i was given a better discount offer which is consumer conflicting as to why not offer tge better discount which leads me to believe the originsl price was high in order to profit more so off of unsudoecting condumer/customers….I dont want to give a bad review on socisl media or consumer reports like Yelp but thats why those are available to consumers to inform others as in a condortium of sticking together to hrlp one another,by word of mouth will always be the #1 form of advertisement bar none…power in the people🙏🏼

B
Buckbuster6213
Blows The Stock Halogens Out Of The Water!

These LED backup/ brake light bulbs are extremely bright and are so much better than the stock halogen bulbs.

T
Tami

Very bright lights

M
Michael King
7443/7444 Red Brake light Bulbs

I've been using these in our 2017 Enclave and Ram for years. The amber front turn bulbs and the reverse light bulbs as well.

They are amazing. No hyper flash and extremely bright (they actually cause the reflective street signs to flash from many car lengths back from the intersection). OEM bulbs? No comparison.

If you want LED's and don't want the hyper flash or a resistor wiring job, get these. They will exceed your expectations.

M
Mark Jones
Awesome!

Brighter than factory, and as advertised, no hyper flash!

C
CHRIS BARBOUR
They WORK!

So far, so good. Just installed and tested them in the driveway and no issues, no hyper-flash! Now I just need the bulbs for the FRONT turn signals!

M
Marcus Fleming
No resistors needed

I was very skeptical about these LED lights. This would have been the 3rd brand I’ve tried. The other brands say they would work in my Chevy Silverado. They didn’t!! However underground lights hold true to the description about these LED lights. They work great and absolutely no hyper flashing. I would recommend if you are changing from halogen lights to LEDS.

R
Rodney Bunch

My third purchase from Underground and as usual NOT disappointed. I have recommended them to my friends and all have been extremely satisfied. LED high and low head light replacement perfect. Third brake light cargo light very bright. And now reverse light and brake light very bright. Simple simple simple! Highly recommend.

A
Andy Geoghegan
Blazer lights are blazing

Installed 7443/7444 brake/turn signal bulbs and they look great! No codes and no issues. Hopefully the cooling fan makes the difference over time, as all the others failed after a few months. Great looking product and great service too!

A
Austin Burns
Error, free, red LED break and turn signal

These error free taillights are absolutely amazing. No splicing wires and adding resistors. I wish they had this technology out 10 years ago. Direct plug and play about a five minute install.

D
Dasha
Excellent quality

These are the 3rd set of lights I've bought from this company and you have a lifetime customer! They do not hyperflash and are bright! They are in both of my vehicles and I love them.

B
Bernard

Shipper quickly. No hyperflash, just as stated. Definitely a big upgrade for my rear signals.

T
Thomas

Pricey but perfect it and great performance

b
bobby baker
Bright brake light bulbs.

So far so good these are much brighter than my stock bulbs and work properly in my 2025 GMC.

B
Barry Sturgill
Good

So far, so good. Seem to work as advertised.

R
Richard Daubitz

7443 7444 Red Brake light Bulbs, Turn Signal LED W/ Built in Resistors No Hyper Flash (PAIR)

J
JOERNIE BERRIOS
No Turn signal Hyperflash

Quick Delivery and So far no hyperflash

S
Sean
Great product

Fantastic products they are extremely bright and easy to install

R
Robert Clark

The bulbs fit perfectly on my Colorado and l love them

M
Mark Mitchell

7443 7444 Red Brake light Bulbs, Turn Signal LED W/ Built in Resistors No Hyper Flash (PAIR)

K
Kevin Strom
Excellent customer service

Order placed promptly. Received phone call to confirm shipping choice. Parts arrived on time and worked as described. No hyper flash or warnings when installed on brake lights in 2024 GMC Sierra elevation. Thank you!

J
Joe
Way brighter!

So far so good! I just really hope they don’t hyper flash after having them a while!

T
Thomas Caraisco
Break light

I hope that they last longer than the other ones I had bought, from a different company, these seem great, just kinda pricey

P
Patrick Fousse
Beyond bright!

Highly visible even through smoked lenses!

H
Harold Frantz
Awesome

Totally awesome brightness and no hyper flash or can bus errors.

A
Allen Ange
Help I can’t see

I purchased replacement LED lights for my Silverado just the tail and back up lights … after installing I had my darling wife help me check to make sure they were working properly.. right bilnker ..left.. tail … and the back up..they were so much brighter I had spots in my eyes …I’m a returning customer and have bought various other lights from Underground.. they a shipped fast ..and if you call the customer service they answer.. a real human .. with answers.. every time I buy a new car or truck I install bright LED lights because you really can’t have enough light … the next car I will buy again from Underground

A
Avery

Amazing lights. Super bright. Fit very snug. Love them

S
Seph Donkor

The fan is very loud when I step on the brakes. Is that normal?

Underground Lighting

Some taillights the fan will echo. Try flipping the bulb 180 degrees.