Tail Light Wiring Color Code Revealed: What Your Mechanic Won’t Tell You


If you’re a motorcycle enthusiast, knowing the ins and outs of your bike’s electrical system is crucial for safety and maintenance. One critical aspect often overlooked is the tail light wiring color code. Understanding this code can save you time, money, and potential headaches when it comes to troubleshooting and repairs. In this article, brought to you by bikeradvise.com, we’ll reveal everything you need to know about tail light wiring color codes for motorcycles. So, let’s dive in and shed light on this essential topic.

If you’re a motorcycle enthusiast with a passion for biking, maintaining your bike’s safety and functionality is a top priority. At bikeradvise.com, we understand the importance of keeping riders informed about essential motorcycle topics. In this article, we focus on “Tail Light Wiring Color Code,” exploring its significance and practical applications. So, join us as we demystify the complexities of tail light wiring and empower you with valuable insights.

Importance of Tail Light Wiring Color Code

importance of Tail Light Wiring Color Code

The tail light wiring color code serves as a standardized guide used by motorcycle manufacturers to ensure consistency and safety. Each wire’s color corresponds to a specific function, such as running lights, brake lights, turn signals, and ground connections. Understanding the color code helps you identify the purpose of each wire, making it easier to troubleshoot issues and make modifications when necessary. The tail light wiring color code is a fundamental aspect of motorcycle electrical systems that every rider and mechanic should be familiar with.

Decoding Tail Light Wiring Color Code

To effectively decode the tail light wiring color code, it’s essential to recognize the common color assignments. While some variation exists among different motorcycle models and manufacturers, certain colors are consistently used for specific functions. Let’s delve into the standard tail light wiring color code:

Decoding Tail Light Wiring Color Code
Wire ColorFunction
BrownTail Lights
YellowLeft Turn Signal
GreenRight Turn Signal
BlueRunning Lights
WhiteGround Connection
RedBrake Lights

Keep in mind that this is a general guideline, and some motorcycles may deviate slightly from this color code. Always refer to your motorcycle’s user manual or consult a qualified mechanic if you encounter any discrepancies.

Recommended Information – Wire Color Codes For Different Motorcycles

You can find the Tail Light Wiring Color Code and general wire variety data for most famous motocycle’s

Tail Light Wiring Color Code

Tail: Conflicting across models and years (on late model BMWs, ought not be utilized to drive any adornment – utilize the BMW embellishment plug all things considered)

Brake: Consistently, Yellow with a Faint stripe (once in a while with yellow touches too!)

Left Blinker: Blue with a color stripe

Right Turn Signal: Blue with a colored stripe

Ground: Brown

Tail: Orange

Brake: White

Left Blinker: Dark with a Pink stripe

Right Blinker: Brown with a Yellow stripe

Ground: Black

Tail: Yellow

Brake: Gray with Red stripe

Left Turn Signal: White with Black stripe

Right Turn Signal: White with Green stripe

Ground: Black

Tail: Blue

Brake: Red with a Yellow stripe

Left Turn Signal: Purple

Right Turn Signal: Brown

Ground: Black

Tail: Brown with White stripe

Brake: Green with Yellow stripe

Left Turn Signal: Orange

Right Turn Signal: Light Blue

Ground: Green

Tail: Red

Brake: Blue

Left Turn Signal: Green

Right Turn Signal: Gray, Green or White

Ground: Black with Yellow stripe

Tail: On late model KTM’s, use “ACC2”

Brake: White with Green stripe

Left Turn Signal: Black with White stripe

Right Turn Signal: Black with White stripe

Ground: Brown

Tail: Gray

Brake: White with Black stripe

Left Turn Signal: Black

Right Turn Signal: Light Green

Ground: Black with White stripe

Tail: Blue

Brake: Yellow

Left Turn Signal: Brown

Right Turn Signal: Green

Ground: Black

Understanding Wiring Color Variations

Understanding of Tail Light Wiring Color Code

Despite the standard tail light wiring color code, certain variations may exist between motorcycle models and manufacturers. These differences are not uncommon, so it’s essential to remain vigilant when working with your bike’s electrical system. Before attempting any repairs or modifications, always verify the wire color assignments specific to your motorcycle. Additionally, certain aftermarket accessories or customizations may introduce further variations, emphasizing the importance of careful observation and documentation.

Identifying Common Wiring Color Codes

Identifying Common Wiring Color Codes

While the tail light wiring color code provides valuable information, other electrical components on your motorcycle may have their color codes. Identifying these codes correctly is crucial to maintain a well-functioning electrical system. Here are some common wiring color codes you might encounter:

  1. Headlight Wiring Color Code:
    • Low Beam: White or Yellow
    • High Beam: Blue or Green
    • Ground: Black
  2. Turn Signal Wiring Color Code:
    • Left Signal: Orange
    • Right Signal: Light Blue
    • Ground: Black
  3. Brake Light Wiring Color Code:
    • Brake Switch: Green or Red
    • Ground: Black
  4. Horn Wiring Color Code:
    • Power: Red
    • Ground: Black

Remember, always cross-reference these color codes with your motorcycle’s manual for accuracy.

ALSO READ – Yamaha MT15: The Ultimate Adrenaline Rush

Connecting the Dots: Wiring Your Tail Lights

Now that you understand the tail light wiring color code and its variations, let’s discuss how to correctly wire your tail lights. While wiring can be intimidating for some, following these steps will ensure a smooth and safe installation:

  1. Gather the Right Tools: Before you begin, ensure you have the necessary tools, including wire strippers, crimping pliers, electrical tape, and a wiring diagram specific to your motorcycle.
  2. Disconnect the Battery: Safety first! Always disconnect the battery to avoid electrical shocks while working with the wiring.
  3. Refer to the Wiring Diagram: The wiring diagram will be your guide throughout the process. Identify the tail light wires and their corresponding colors.
  4. Strip the Wires: Carefully strip the insulation from the ends of the wires you’ll be connecting.
  5. Crimp the Connectors: Attach the appropriate connectors to the wires, ensuring a secure connection.
  6. Connect the Wires: Follow the wiring diagram to connect the wires according to their functions. Avoid any mix-ups or accidental connections.
  7. Test the Tail Lights: After wiring, reconnect the battery and test your tail lights to ensure they’re functioning correctly.
  8. Secure the Wiring: Use electrical tape or zip ties to secure the wires and prevent them from interfering with other motorcycle components.

If you’re uncertain about any step or lack experience in motorcycle wiring, it’s best to seek assistance from a qualified mechanic.

Tips for Troubleshooting Wiring Issues

Troubleshooting Wiring Issues

Despite careful wiring, electrical issues can still arise. Troubleshooting wiring problems requires patience and a methodical approach. Here are some tips to help you identify and address common wiring problems:

  1. Check the Fuses: Blown fuses can disrupt electrical circuits. Review the breakers and supplant any that are blown.
  2. Inspect the Wiring: Carefully examine the wiring for signs of damage, fraying, or loose connections.
  3. Use a Multimeter: A multimeter can help you measure voltage and identify faulty wires.
  4. Follow the Wiring Diagram: Always refer to the wiring diagram to ensure correct connections.
  5. Look for Grounding Issues: Many electrical problems stem from inadequate grounding. Verify that all ground connections are secure and free from corrosion.
  6. Test Components Separately: If a specific component isn’t working, test it separately to determine if the issue lies with the component or the wiring.
  7. Be Patient: Electrical troubleshooting can be time-consuming. Stay patient and methodical in your approach.

If you’re unable to resolve the issue or lack experience in electrical troubleshooting, consult a professional motorcycle mechanic.

Safety First: Precautions and Best Practices

When working with motorcycle electrical systems, safety should always be your top priority. Follow these precautions and best practices to ensure a safe and successful wiring experience:

  1. Disconnect the Battery: Always disconnect the battery before working on the electrical system to avoid electrical shocks.f mototrcycles tail light
  2. Handle Wires Carefully: Avoid bending or damaging wires during installation or repairs.
  3. Use Proper Tools: Ensure you have the right tools for the job to prevent damage to wires and components.
  4. Refer to the Manual: Always consult your motorcycle’s user manual or wiring diagram for accurate information.
  5. Avoid Water and Moisture: Keep electrical components dry and protected from moisture to prevent short circuits.
  6. Wear Safety Gear: When working on your motorcycle, wear appropriate safety gear, including gloves and eye protection.
  7. Double-Check Connections: Before testing your tail lights, double-check all connections to ensure they’re secure.

By following these safety precautions and best practices, you can minimize the risk of accidents and ensure a successful wiring job.

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Frequently Asked Questions (FAQs)

  1. Q: Can I Use Any Wire Color for My Tail Lights?

A: It’s essential to adhere to the tail light wiring color code to ensure consistency and avoid confusion during troubleshooting. Using incorrect wire colors can lead to safety hazards and malfunctioning tail lights.

  1. Q: Why Are Tail Light Wiring Color Codes Different for Some Motorcycles?

A: Manufacturers may use different tail light wiring color codes due to various factors, including design choices, regional regulations, and component availability.

  1. Q: Can I Install Aftermarket Tail Lights on My Motorcycle?

A: Yes, you can install aftermarket tail lights, but it’s essential to understand their wiring requirements and follow the manufacturer’s instructions carefully.

  1. Q: How Do I Know If My Tail Light Wiring is Faulty?

A: If your tail lights don’t work or exhibit abnormal behavior, such as flickering or dimming, there may be an issue with the wiring.

  1. Q: Are There Tail Light Wiring Kits Available for Motorcycles?

A: Yes, there are tail light wiring kits designed to simplify the installation process and ensure compatibility with specific motorcycle models.

  1. Q: Can I Rewire My Tail Lights Myself?

A: Rewiring tail lights requires some electrical knowledge and experience. If you’re unsure, it’s best to seek assistance from a qualified mechanic.


Understanding the tail light wiring color code is a valuable skill for any motorcycle enthusiast. With this knowledge, you can confidently troubleshoot, repair, and modify your bike’s electrical system without relying solely on a mechanic. Remember always to prioritize safety, follow best practices, and refer to your motorcycle’s user manual or wiring diagram for accurate information. By taking the time to learn about tail light wiring color codes, you empower yourself as a rider and enhance your overall biking experience.

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