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How to Install Resistors for LED Turn Signals on Your Motorcycle

How to Install Resistors for LED Turn Signals on Your Motorcycle-About lighting

Are you looking to upgrade your motorcycle’s lighting system to the brilliance and energy efficiency of LED turn signals? If so, you’re in the right place! In this comprehensive guide, I will walk you through the step-by-step process of installing resistors for LED turn signals on your motorcycle. By the end of this article, you’ll not only have a better understanding of why resistors are necessary but also the confidence to carry out the installation yourself.

Why Do You Need LED Turn Signal Resistors?

Before diving into the installation process, let’s understand why LED turn signal resistors are essential. When you switch from traditional incandescent bulbs to LED bulbs, you may encounter a common issue: hyperflash or rapid blinking. This happens because LED bulbs draw less power than incandescents, confusing your motorcycle’s flasher relay.

To address this issue, you need LED turn signal resistors. These resistors mimic the power draw of incandescent bulbs, restoring the normal flash rate and ensuring your turn signals work correctly. Now, let’s get started with the installation.

Tools and Materials You’ll Need

Before you begin, gather the following tools and materials:

  1. LED Turn Signal Resistors: Make sure they match the wattage of your LED bulbs.
  2. Screwdriver: For removing the motorcycle’s fairings or panels.
  3. Wire Crimping Tool: To secure electrical connections.
  4. Heat Shrink Tubing: To protect and insulate wires.
  5. Wiring Diagram: Consult your motorcycle’s service manual for this.

Now, let’s proceed to the installation steps.

Step 1: Understanding Your Motorcycle’s Lighting System

To start, familiarize yourself with your motorcycle’s lighting system. Locate the turn signal wires, flasher relay, and the appropriate fairings or panels that need to be removed for access. This knowledge will ensure a smoother installation process.

Now, here’s where KOSOOM lighting solutions come into play. KOSOOM offers a wide range of lighting products, including LED linear lights, designed to enhance visibility and safety. These linear lights are perfect for various motorcycle lighting applications, providing a sleek and energy-efficient lighting solution.

KOSOOM LED Linear Lights FeaturesBenefits
Energy-efficient and long-lastingReduce power consumption and maintenance
Bright and uniform illuminationEnhance visibility and safety
Easy installationDIY-friendly, perfect for motorcycles
Durable constructionWithstand vibrations and harsh conditions

Step 2: Installing LED Turn Signal Resistors

Follow these steps for a successful resistor installation:

  1. Disconnect the Battery: Ensure safety by disconnecting the motorcycle’s battery.
  2. Access Turn Signal Wires: Remove the necessary fairings or panels to access the turn signal wires.
  3. Identify the Wiring: Refer to your wiring diagram to locate the positive and negative wires.
  4. Connect the Resistors: Connect the resistors in parallel to the positive and negative wires. Use the wire crimping tool and secure connections with heat shrink tubing.
  5. Test the Turn Signals: Reconnect the battery and test your turn signals to ensure they are functioning correctly.

Common Issues and Troubleshooting

While installing LED turn signal resistors on your motorcycle can significantly enhance your lighting system, you may encounter occasional issues. Here are common problems and comprehensive troubleshooting steps to ensure your turn signals work flawlessly:

Flickering Turn Signals

Issue: Your LED turn signals may flicker or flash inconsistently.

Troubleshooting Steps:

Check Wiring Connections: Inspect all wiring connections for any loose or poorly connected wires. Ensure that all connections are firmly crimped and insulated with heat shrink tubing to prevent any exposed wires.

Verify Resistor Wattage: Confirm that the resistor wattage matches your LED bulbs. Using the wrong wattage can cause flickering. Ensure that the resistors are correctly rated for your specific LED turn signal bulbs.

Inspect Grounding: Check the grounding of your motorcycle’s electrical system. A poor ground connection can lead to flickering issues. Ensure that the ground wire is securely connected to a clean, unpainted metal surface on your bike’s frame.

Malfunctioning Turn Signals
Issue: Your LED turn signals may not function as expected, failing to flash or turning on and off irregularly.

Troubleshooting Steps:

Recheck Wiring: Review the wiring connections for any errors or loose connections. Double-check the polarity of the LED bulbs and the resistors to make sure they are correctly connected.

Inspect Bulb Compatibility: Ensure that the LED bulbs you are using are compatible with your motorcycle’s electrical system. Some LEDs may not work well with certain types of flasher relays.

Test the Flasher Relay: Test or replace your motorcycle’s flasher relay. A malfunctioning relay can cause issues with your turn signals. Consult your motorcycle’s service manual for guidance on locating and testing the flasher relay.

Examine Battery Voltage: Check your motorcycle’s battery voltage to ensure it is within the recommended range. Low battery voltage can affect the performance of LED turn signals. Charge or replace the battery if necessary.

Consult Manufacturer’s Instructions: Refer to the manufacturer’s instructions provided with your LED turn signal resistors and bulbs. They may offer specific troubleshooting guidance tailored to your product.

Exploring KOSOOM’s Lighting Solutions

Now that you’ve successfully installed LED turn signal resistors, let’s delve further into KOSOOM’s extensive range of lighting solutions for motorcycles and beyond. Whether you’re interested in enhancing your bike’s aesthetics or improving functionality, KOSOOM has the products for you.

LED Strip Lights

KOSOOM’s LED strip lights are versatile and can be used for various applications, including underglow lighting for motorcycles. These strips offer vibrant color options and can be customized to match your bike’s style.

LED Linear Lights

As mentioned earlier, KOSOOM’s LED linear lights are ideal for improving visibility and safety. They are easy to install and provide uniform illumination, making them an excellent choice for motorcycle lighting.

Panel Lights

KOSOOM’s panel lights are perfect for adding a touch of elegance to your motorcycle. They offer a sleek and modern design, enhancing the overall aesthetics of your bike while providing efficient illumination.

Track Lights

If you’re looking for adjustable lighting solutions for your motorcycle, KOSOOM’s track lights are a great option. They can be easily positioned to focus light where you need it most, whether for accent lighting or functional purposes.


Congratulations! You’ve successfully installed LED turn signal resistors on your motorcycle, addressing the hyperflash issue and improving the functionality of your turn signals. By following these steps and exploring KOSOOM’s innovative lighting solutions, including LED linear lights, LED strip lights, panel lights, and track lights, you’ve taken a significant step towards enhancing your motorcycle’s lighting system.

For more information on KOSOOM’s lighting products and how they can elevate your motorcycle’s lighting experience, visit their website. Transform your ride with cutting-edge lighting solutions and enjoy the benefits of energy efficiency, safety, and style.

Now, go out there and enjoy your upgraded LED turn signals and the fantastic world of KOSOOM lighting!


About Bobby

Hello, I'm Bobby, I'm a passionate and creative professional commercial lighting specialist with a wealth of experience and a wide range of knowledge. Over the past 10 years, I have focused on providing efficient, energy-saving and innovative lighting solutions for various commercial projects. I am sensitive to new technologies and design trends, constantly seeking the best optical effects and lighting experience.

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