Expert Guide: Load Resistors for LED Turn Signal Lights
LED turn signal lights have become increasingly popular among vehicle owners due to their durability, energy efficiency, and brighter illumination. However, one common issue that arises with LED turn signal lights is hyperflashing or rapid blinking. This is caused by a difference in resistance between the LED lights and the vehicle's electrical system, which can be solved by using load resistors. In this comprehensive guide, we will explore how load resistors work, their benefits, cost and installation, symptoms of needing load resistors, comparison to other solutions, and the best brands to consider. We will also provide maintenance tips and real-world examples of load resistors in action. Let's dive in!
How Load Resistors Work
A load resistor is a small electrical component that is designed to mimic the power draw of a regular incandescent bulb. LED lights have a lower power draw compared to traditional bulbs, which causes hyperflashing in the turn signals. By adding a load resistor to the circuit, the resistance is increased to match that of a regular bulb, resulting in a consistent and normal blinking rate.
Benefits of Load Resistors
Aside from solving the issue of hyperflashing, load resistors offer several other benefits:
- Improved visibility: By maintaining a consistent blinking rate, load resistors ensure that the turn signals are easily visible to other drivers on the road.
- Extended lifespan of LED lights: The addition of load resistors can help prevent damage to LED lights by equalizing the power draw in the circuit.
- Cost-effective solution: Load resistors are a relatively inexpensive solution compared to other options such as replacing the flasher relay or installing a new wiring harness.
- Easy installation: Load resistors are simple to install, making it a hassle-free solution for vehicle owners.
Cost and Installation
The cost of load resistors can vary depending on the brand and type, with prices ranging from $10 to $50 per pair. Installation is relatively easy and can be done by following these steps:
- Locate the turn signal wires near the LED lights.
- Connect one end of the load resistor to the positive wire and the other end to the negative wire using the provided clips or soldering.
- Repeat for the other side.
- Secure the load resistors away from any heat sources and ensure that they are not touching any other components.
Symptoms of Needing Load Resistors
If you are experiencing hyperflashing or rapid blinking of your LED turn signal lights, it is a clear indication that you need load resistors. Other symptoms that may arise include:
- Dim or flickering LED lights
- LED lights not lighting up at all
- LED lights staying on constantly
- Fuse blowing in the turn signal circuit
Comparison to Other Solutions
While load resistors are a popular and effective solution for hyperflashing, there are other options available:
Flasher Relay Replacement
Replacing the flasher relay with an LED-compatible one is another solution for hyperflashing. However, this option can be more expensive and may require more technical expertise for installation.
New Wiring Harness
Installing a new wiring harness designed for LED lights is also a viable option. However, this can be a costly and time-consuming solution that may not be practical for all vehicle owners.
Pros and Cons of Load Resistors
| Pros | Cons |
| Cost-effective | May require additional installation time and effort |
| Easy to install | Can produce heat and may need to be secured away from other components |
| Improves visibility and safety | May not be a permanent solution if other issues arise with the LED lights |
| Extends lifespan of LED lights |
Best Brands to Consider
When it comes to choosing the right load resistors for your vehicle, here are some top brands to consider:
Diode Dynamics
Diode Dynamics is a well-known brand in the LED lighting industry, offering a wide range of high-quality products including load resistors. Their load resistors are designed for easy installation and are built to last.
Putco
Putco is another reputable brand that offers load resistors designed to work with various types of LED lights. Their load resistors are known for their durability and reliability.
Recon
Recon is a leading manufacturer of aftermarket LED lighting products, including load resistors. Their load resistors are designed to work with their own LED lights, but can also be used with other brands.

Philips
Philips is a trusted brand in the automotive industry and offers load resistors that are compatible with their own LED lights, as well as other brands. Their load resistors are known for their high performance and quality.
Maintenance Tips
To ensure the longevity and proper functioning of your load resistors, here are some maintenance tips to keep in mind:
- Regularly check for any signs of damage to the load resistors, such as melting or burning.
- Ensure that the load resistors are secured away from any heat sources and are not touching other components.
- If you experience any issues with your LED lights, check the load resistors for any potential malfunctions.
Real-World Examples of Load Resistors in Action
To further demonstrate the effectiveness of load resistors, here are two real-world examples of vehicle models that have successfully used load resistors for their LED turn signal lights:
2018 Ford F-150
A 2018 Ford F-150 owner had recently upgraded their turn signal lights to LED but noticed that they were experiencing hyperflashing. After installing load resistors, the issue was resolved and the turn signals functioned properly.
2015 Honda Civic
A 2015 Honda Civic owner had installed LED turn signal lights but noticed that they were not lighting up at all. After installing load resistors, the issue was resolved and the turn signals functioned properly.
FAQs
Q: Can I use load resistors for other LED lights besides turn signals?
A: No, load resistors are specifically designed for turn signals and may not work properly with other LED lights.
Q: Will using load resistors affect the warranty of my LED lights?
A: It is always best to check with the manufacturer of your LED lights, but in most cases, using load resistors will not void the warranty.
Q: Do load resistors need to be replaced over time?
A: It is recommended to replace load resistors if they show any signs of damage or malfunction.
Q: Can I install load resistors on my own or do I need a professional?
A: Load resistors are designed for easy installation and can be done by most vehicle owners. However, if you are not comfortable with electrical work, it is best to seek professional help.
Q: Will using load resistors drain my car battery?
A: No, load resistors have a minimal power draw and will not significantly affect your car battery.
Conclusion
Load resistors are a simple and cost-effective solution for the common issue of hyperflashing in LED turn signal lights. By understanding how they work, their benefits, and proper installation and maintenance, vehicle owners can enjoy the full benefits of LED lights without any issues. We hope this expert guide has provided valuable insights and information on load resistors for LED turn signal lights.