H-come Universal Motorcycle Odometer LCD Digital Speedometer Tachometer Gauges User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your H-come Universal Motorcycle Odometer LCD Digital Speedometer Tachometer Gauges. Please read this manual thoroughly before installation and use to ensure proper function and safety. This device is designed to provide essential riding information including speed, engine RPM, odometer, trip distance, and fuel level for most 12V motorbikes.

2. Product Overview

The H-come Universal Motorcycle Gauge features a clear LCD digital display with multiple backlight color options, providing vital information at a glance. Its robust design ensures durability for various riding conditions.

Key Features:

• LCD Digital Display: Clear and easy-to-read display for all riding conditions.
• Multi-function: Displays speed (MPH/KMH), engine RPM, total odometer, trip meter, and fuel level.
• Night Light: Integrated backlight for visibility in low-light conditions.
• Universal Compatibility: Designed for most 12V motorcycles.
• Durable Construction: Made from metal for enhanced longevity.

Product Components:

The package includes the main gauge unit, a mounting bracket, and a wiring harness.

Figure 2.1: Front view of the H-come Universal Motorcycle Gauge with blue backlight.

Figure 2.2: H-come Motorcycle Gauge installed on a motorbike.

Figure 2.3: Main gauge unit, speed sensor, and wiring harness.

Figure 2.4: Gauge displaying various backlight color options.

3. Setup

3.1. Installation

1. Select a suitable mounting location on your motorcycle, ensuring clear visibility and protection from direct impact.
2. Attach the provided mounting bracket to the motorcycle using appropriate hardware (not included).
3. Securely fasten the H-come gauge to the mounting bracket.
4. Ensure all connections are routed safely, away from moving parts or heat sources.

3.2. Wiring Diagram

Proper wiring is crucial for the correct function of the gauge. It is highly recommended to consult a qualified motorcycle technician for installation if you are unfamiliar with electrical systems. The general wiring color code is as follows:

• Green Wire: Ground connection.
• Black Wire: Power supply (12V).
• Blue/White Wire: Fuel signal input.
• Other Wire (e.g., Yellow/Red): Tachometer signal input.

Warning: Incorrect wiring can damage the unit or your motorcycle's electrical system. Always disconnect the battery before performing any wiring work.

3.3. Initial Configuration (Programming Mode)

After installation and wiring, the gauge requires initial configuration to ensure accurate readings. Follow these steps to enter programming mode and set parameters:

1. Ensure the motorcycle's ignition is OFF.
2. Press and hold the button on the gauge.
3. While holding the button, turn the motorcycle's ignition ON. The display should show "P0000".
4. Enter the password "P6610":
   • Use short presses of the button to increment the current digit.
   • Use a long press (hold for 2-3 seconds) to move to the next digit.
   • Once "P6610" is displayed, a long press will confirm and enter the settings menu.
5. Setting 1: Speed Calibration (Wheel RPMs at 60 km/h)
   • This setting calibrates the speedometer based on your wheel circumference. The display will show a value (e.g., "00466").
   • To calculate your specific value: Measure your front tire's circumference in meters. Divide 16.6667 (meters per second traveled at 60 km/h) by your tire's circumference in meters. Multiply this result by 60 to get the RPM at 60 km/h. For example, for a 21-inch front tire (approx. 1.676 meters circumference), the value would be around 596.
   • Adjust the displayed value using short presses to change digits and long presses to move between digits.
   • A long press after setting the value will save it and move to the next setting.
6. Setting 2: Unit Selection (km/h or mph)
   • Display will show "1001" for kilometers per hour (km/h) or "1002" for miles per hour (mph).
   • Use short presses to toggle between "1001" and "1002".
   • A long press will save the selection and move to the next setting.
7. Setting 3: Cylinder Count (Tachometer Calibration)
   • This setting calibrates the tachometer. Display will show values like "2002" or "2004".
   • "2002" typically corresponds to 2 cylinders or 2 ignition coils. "2004" typically corresponds to 4 cylinders or 4 ignition coils. Select the value that best matches your motorcycle's engine configuration for accurate RPM readings.
   • Use short presses to toggle between options.
   • A long press will save the selection and move to the next setting.
8. Setting 4: Fuel Gauge Calibration
   • This setting is for the fuel gauge. Specific values may vary. It is often recommended to leave this at its default if the fuel gauge appears to function correctly.
   • A long press will save the setting and exit programming mode.

4. Operating Instructions

4.1. Basic Display Functions

Once powered on, the gauge will display the following information:

• Speed: Current riding speed in MPH or KMH.
• RPM: Engine revolutions per minute (x1000/min).
• Odometer (ODO): Total distance traveled by the motorcycle.
• Trip Meter (TRIP): Resettable distance for individual trips.
• Fuel Level: Indication of fuel remaining in the tank (E for Empty, F for Full).

4.2. Switching Modes

The single button on the gauge is used to switch between display modes and adjust settings.

• Short Press: In normal operating mode, a short press typically cycles between Odometer (ODO) and Trip Meter (TRIP) displays.
• Long Press: A long press (hold for 2-3 seconds) can be used to reset the Trip Meter when it is displayed. It is also used to enter and navigate the programming mode as described in Section 3.3.

4.3. Changing Backlight Colors

The gauge supports multiple backlight colors. To change the backlight color, typically a short press of the button while in normal operating mode (not in programming mode) will cycle through the available colors. Continue pressing until your desired color is displayed.

5. Maintenance

• Cleaning: Use a soft, damp cloth to clean the display and housing. Avoid abrasive cleaners or solvents that could damage the plastic or finish.
• Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion. Loose connections can lead to intermittent operation or inaccurate readings.
• Environmental Protection: While designed for outdoor use, prolonged exposure to extreme weather conditions (heavy rain, direct sunlight for extended periods) may affect the unit's lifespan.

6. Troubleshooting

7. Specifications

Figure 7.1: Product Dimensions.

8. Warranty and Support

For warranty information or technical support, please refer to the purchase documentation or contact the seller directly. Keep your proof of purchase for any warranty claims.