Mini Motorcycle Speedometer
Digital Speedometer LCD WISENDURO
This document provides detailed information and instructions for the Mini Motorcycle Speedometer. The device features a compact LCD display showing speed, RPM, gear, fuel level, and various indicators. It is designed for motorcycle use and includes multiple settings for customization.
The speedometer unit is black with an LCD screen. It displays:
- Speed: 0 km/h
- RPM: x1000 r/min
- Gear Indicator: ? (Neutral)
- Fuel Level: Indicated by segments
- Warning Lights: ➡️ (Right Turn Signal), ⬅️ (Left Turn Signal), ? (High Beam), ⚠️ (Oil Warning), ⚙️ (Engine Check).
Technical Specifications
- Normal operating voltage: 9 ~16V
- Standard voltage: 12V
- Operating temperature: -30 ~80°C
- Storage temperature: -40°C ~ 90°C
- Current consumption: <3mA
- Model: Rectangular (Note: The PDF mentions 'pyöreä' which means round, but the image and description suggest a rectangular unit. This might be a translation nuance or a general model type.)
- Material: ABS, PP, PMMA, LCD
- Certifications: LATF: 16949
Technical Requirements
- All wire lengths are suitable for Japanese standard AVSS0.5F, 19X0.19, and wiring complies with JASO D611-94.
- Connector pull-out force must be at least 70N.
Function Signal Mapping
| Function | Corresponding Wire Color | Signal |
|---|---|---|
| Right Turn Signal | Light Blue | High |
| Left Turn Signal | Orange | High |
| High Beam | Blue | High |
| Oil Warning Light | Green-Orange | Low |
| Speed | Red (frequency 17.5Hz, speed 60+3km/h) | Voltage Pulse |
| RPM | Blue and White (60Hz default, 3600 r/min signal position) | Voltage Pulse |
| Neutral | Green and Red | Low |
| Gear 1 | Pink | Low |
| Gear 2 | Blue and Red | Low |
| Gear 3 | Green and Black | Low |
| Gear 4 | Yellow and Red | Low |
| Gear 5 | Brown and White | Low |
| Fuel Level | Yellow and White (95 ohms empty / 10 ohms full) | Ohms |
| Meter Ignition (Ignition) | Black | +12V |
| 5V Output | Yellow | +5V |
| Ground | Green | GND |
Settings Overview
| Function | Description |
|---|---|
| 1. Speed | 3 digits, max. 199 km/h |
| 2. Odometer | 6 digits, max. 999999 |
| 3. Trip Meter (TRIP) | 4 digits, max. 999.9; can be reset by pressing the button |
| 4. Max. RPM | 12000 RPM |
| 5. Fuel Level | LCD display, 5 segments, low level warning |
| 6. Indicators | Left and right turn signals (green), high beam (blue), fuel injection system (EFI) (yellow) |
| 7. Gear Display | LCD display for gears 1-5 and ? (Neutral) |
Setup Procedures
To turn the device on/off, use the button located on the left side. Allow +/- 5 seconds between operations.
Setting 1: Sensor Pulse Count Adjustment
The speedometer's operation relies on pulses received from the speed sensor. The unit must be configured to match the number of pulses generated per wheel revolution. The setting range is 00-12.
For example, on a motorcycle like the BMW K1/K75/K100/K1100, the sensor produces 6 pulses per wheel revolution. To display speed correctly, set this value to "06".
Setting 2: Tire Circumference Determination
For example, for a BMW K series motorcycle (K1/K75/K100/K1100) rear wheel: Calculate the tire circumference. Measure the circumference of the fully inflated rear tire in millimeters. You will need the tire size and the following formula:
C = π × (R + 2 × (H/L) / 100 × L)
The circumference value is determined by the rim diameter R (in inches) and the tire's height H and width L. The rim diameter R is multiplied by 25.4 to convert it to millimeters.
Example:
Tire size 130/90 R17.
Calculate circumference:
C = π × (17 × 25.4 mm + 2 × (90/100) × 130 mm)
C = 2092 mm = 209.2 cm = 2.092 m
Inputting into the Speedometer: The calculated result from any method should be entered into the flashing numbers on the speedometer. For the example tire, the value is approximately 2092 (+/- a few millimeters).
Setting 3: Engine RPM Display (1-2-4)
To ensure correct RPM display (e.g., for BMW K series K1/K75/K100/K1100), consider the cycle of intake, compression, power, and exhaust strokes over two crankshaft revolutions. Set the value to "2".
Determining Engine RPM Setting (1-2-4): The RPM setting determines how many crankshaft revolutions the speedometer uses to calculate one work cycle. This depends on the engine's design.
- 1: Used for single-cylinder engines where one power stroke occurs per crankshaft revolution (2-stroke engine).
- 2: Used for 4-stroke engines where one power stroke occurs every two crankshaft revolutions (e.g., BMW K1/K75/K100/K1100).
- 4: Used for engines where the ignition pulse is read every other revolution (some multi-cylinder configurations).
Example for BMW K Series (K1/K75/K100/K1100): Select "2" as it is a 4-stroke engine.
General Parameter Setting Instructions
- Press and hold the button. Simultaneously start the vehicle to enter the settings mode.
- Short press the button to adjust the pulse count. The value can be set between 1–12.
- After this, long press the button to proceed to the next setting: tire circumference. The value can be set between 1000–2999 mm.
- Short press the button to set a digit, and long press to move to the next digit.
- Next, long press the button to proceed to the fuel level sensor setting. Short press to switch between two-line and three-line fuel gauge displays.
- Finally, long press the button to proceed to the cylinder count setting. Short press to switch between options for 1, 2, and 4 cylinders.
- Long press the button to exit the settings mode.