Universal motorcycle speedometers are a popular aftermarket addition for motorcycle enthusiasts. They offer a range of features and styles that can complement any bike. However, installing a speedometer can be a little tricky, especially for those who have limited experience with motorcycle wiring. In this article, we will provide a detailed guide on how to wire a universal motorcycle speedometer. We will cover the basics of wiring, tools needed, and a step-by-step guide to wiring your new speedometer.
Basics of Wiring
Before we dive into wiring the speedometer, let’s go over some basic concepts of wiring. First, it’s essential to understand that the wiring of a motorcycle is a closed-loop system. This means that the wires are connected in a circuit, and if any part of the circuit is disrupted or broken, the entire system won’t work.
Secondly, you need to know the difference between a positive and negative wire. Positive wires usually have a red or orange color and are connected to the motorcycle’s battery, while negative wires typically have a black or blue color and are connected to the motorcycle’s chassis.
Finally, when wiring the speedometer, it’s important to follow the manufacturer’s instructions. Each manufacturer will have a specific wiring diagram, and following this diagram is crucial to ensure the system works correctly.
Tools Needed
Before starting the wiring process, you’ll need a few tools to make the job as easy as possible. Here are the tools that we recommend:
| Wire Strippers | A tool that can strip the insulation off of wires. |
| Wire Crimper | A tool that can crimp wires together. |
| Wire Cutters | A tool that can cut wires to the desired length. |
| Soldering Gun | A tool that can melt solder and join wires together. |
| Electrical Tape | A roll of tape that can insulate and protect the wires. |
Step-by-Step Guide to Wiring a Universal Motorcycle Speedometer
Step 1: Gather Materials
Before starting the wiring process, make sure you have everything you need. This includes the speedometer, wiring harness, and tools.
Step 2: Locate the Wiring Harness
The wiring harness is the set of wires that connect the speedometer to the motorcycle’s electrical system. It’s usually found under the fuel tank or near the battery. Locate the wiring harness and remove the protective cover to expose the wires.
Step 3: Connect the Power Wires
The power wires are usually colored red and black. Connect the red wire to the positive terminal of the battery and the black wire to the negative terminal of the battery. Follow the manufacturer’s wiring diagram to ensure you connect the wires correctly.
Step 4: Connect the Sensor Wires
The sensor wires are responsible for reading the speed of the motorcycle. They are usually colored green and black. Connect the green wire to the sensor, which is usually located on the front wheel or transmission. Connect the black wire to the motorcycle’s chassis.
Step 5: Connect the Indicator Lights
The indicator lights are responsible for displaying the bike’s status, such as turn signals, high beam, and neutral. Follow the manufacturer’s wiring diagram to connect the indicator lights correctly.
Step 6: Test the Speedometer
After connecting all the wires, turn on the ignition switch and test the speedometer. Make sure all the functions, such as the speedometer gauge, indicator lights, and odometer, work correctly.
FAQ
What if I don’t have a wiring diagram?
If you don’t have a wiring diagram, you can usually find it online or contact the manufacturer for a copy. It’s important to have the correct wiring diagram to ensure the system works correctly.
What if I don’t feel comfortable with the wiring process?
If you’re not confident with the wiring process, it’s always best to seek professional help. An experienced mechanic can help you install the speedometer correctly and ensure the system works correctly.
Is it necessary to use a universal motorcycle speedometer?
No, it’s not necessary to use a universal motorcycle speedometer. However, they offer a range of features and styles that can complement any bike. They are also a popular aftermarket addition for motorcycle enthusiasts.
What if the speedometer doesn’t work after wiring?
If the speedometer doesn’t work after wiring, double-check all the wiring connections to ensure they are correct. If the connections are correct, there may be an issue with the speedometer itself, and it may need to be replaced.
Can I install a speedometer without professional help?
Yes, you can install a speedometer without professional help. However, it’s essential to have a basic understanding of motorcycle wiring and follow the manufacturer’s instructions carefully. If you’re not confident with the wiring process, seek professional help.
What if I damage a wire during the wiring process?
If you damage a wire during the wiring process, you’ll need to repair or replace it. Cut the damaged wire and strip the insulation from the ends. Then, use a wire crimp tool to attach a new wire to each side of the cut wire. Finally, insulate the wires with electrical tape.
