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Koso Mini3 - User Manual

Koso Mini3
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wh003ba51a
30
11.5
60
-10~60°C
JIS D 0203 S2
Effective temperature range
Meter weight
Meter size (W X L X H)
Meter standard
Setting range:
100Ω, 180Ω, 250Ω, 270Ω, 510Ω, 700Ω, 1200Ω, user
Setting range:
0~25%
Setting unit: 1%
Digital fuel meter
Fuel gauge resistance setting
Fuel warning setting
Around 22g
Effective voltage
DC 12V
W60 X L30 X H11.5 mm
1 2 3
INsTRUCTION
1-1
Thank you for purchasing KOSO Fuel meter , please read the instruction throughly befor installing.
1.The lcd meter is apply for DC 12V.
2.For installation, please follow the steps described in manual. Any damage caused by wrong installation shall be imputed to the users.
3.Don't break or modify the wire terminal. To avoid the short circuit, please don't pull the wire when installing.
4.Do not disassemble or change any parts excluding the manual description.
5.The interior examination or maintenance should be executed by our professionals.
Notice
MARK MEANING:
WARNING!
CAUTION!
You could get the installation details from the information behind the mark.
Some processes must be followed to avoid the affection caused by wrong installation.
Some processes must be followed to avoid damages to yourself or the public.
Some processes must be followed to avoid the damage to the vehicle.
Accessory
PRESS THE
BUTTON 3
SECONDS
PRESS THE
BUTTON
ONE TIME
LCD meter X1
Mid-way connect X3 Velcro X 1set
Please contact the local distributor if the items you open are not the same, with the above-listed one.
2
Wiring installation instructions
Use the velcro (Accessory 3 ) to
install the meter (Accessory 1) to
the place you want to put it on.
Mid-way connect (Accessory 2)
Red / "+"Wire connect key on
DC 12V main power switch
Black / Ground wire connect to the
vehicle body or the engine (it must
be a good ground)
3-1
Basic function instruction
Design and specifications are subject to change without notice!
Display range: 10 levels
Display unit:
Each level represents 10%
Display range: 0~100%
Display unit: 1%
Fuel level
Original meter
cut
Green-Fuel (-)
Original Fuel Level Signal Wire
Fuel Pump
Gauge Fuel Tank
YAMAHA
HONDA
SUZUKI
KAWASAKI
SYM
KYMCO
PGO
Main switch wiring reference:
Power
Ground
Brown
Brown
Black
Green
The color listed above may differ depending
on the model.
Black
Black
Black
Black
Green
Green
Key on
Red
Red
Red
Red
Red / White
Orange
Green
Red / Black
White
Black / Yellow
YAMAHA
SUZUKI
HONDA
Yellow / White
Yellow / White
The fuel sensor is electronic type, please don't
parallel connection with the original- otherwise
the fuel gauge won't display.
The wrong installation of the fuel wiring may
cause the meter break.
Green
Fuel indicator wiring reference:
KAWASAKI
SYM
KYMCO
PGO
Black / L Green
Gray
Yellow / White
Yellow / White
Question and Answer IconNeed help?

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Summary

Accessory List

Wiring Installation Guide

Basic Function and Specifications

Fuel Level Display

Displays the current fuel level in 10 discrete steps or 0-100% numerically.

Fuel Gauge Resistance Setting

Configures the meter to match the vehicle's fuel sender resistance.

Fuel Warning Setting

Sets the fuel level threshold for the warning indicator.

Technical Specifications

Includes operating voltage, temperature range, meter standard, size, and weight.

Fuel Meter Setting Instructions

Fuel Gauge Resistance Setting

Guides users through selecting the correct resistance value for their vehicle's fuel sender.

Fuel Warning Setting

Details the procedure to set the low fuel warning level.

Fuel Learning Setting

Explains how to calibrate the meter for empty and full fuel tank positions.

Fuel Gauge Resistance Reference

Troubleshooting Common Issues

Meter Not Working

Covers checks for power supply, wiring, and fuses for meter activation issues.

Incorrect Fuel Gauge Display

Addresses issues with fuel level display, checking fuel, wiring, and settings.

Summary

Accessory List

Wiring Installation Guide

Basic Function and Specifications

Fuel Level Display

Displays the current fuel level in 10 discrete steps or 0-100% numerically.

Fuel Gauge Resistance Setting

Configures the meter to match the vehicle's fuel sender resistance.

Fuel Warning Setting

Sets the fuel level threshold for the warning indicator.

Technical Specifications

Includes operating voltage, temperature range, meter standard, size, and weight.

Fuel Meter Setting Instructions

Fuel Gauge Resistance Setting

Guides users through selecting the correct resistance value for their vehicle's fuel sender.

Fuel Warning Setting

Details the procedure to set the low fuel warning level.

Fuel Learning Setting

Explains how to calibrate the meter for empty and full fuel tank positions.

Fuel Gauge Resistance Reference

Troubleshooting Common Issues

Meter Not Working

Covers checks for power supply, wiring, and fuses for meter activation issues.

Incorrect Fuel Gauge Display

Addresses issues with fuel level display, checking fuel, wiring, and settings.

Overview

The KOSO Fuel Meter is a digital instrument designed to provide accurate and real-time fuel level information for vehicles operating on a DC 12V electrical system. This device is an essential tool for drivers who need to monitor their fuel consumption and avoid unexpected fuel shortages. The meter features a clear LCD display that shows the fuel level in two distinct ways: a 10-level graphical representation and a precise percentage display. This dual display ensures that users can quickly grasp their fuel status at a glance, whether they prefer a visual indicator or a numerical value.

Function Description

The primary function of the KOSO Fuel Meter is to measure and display the fuel level in a vehicle's tank. It achieves this by connecting to the vehicle's original fuel level signal wire, interpreting the electrical resistance changes from the fuel sender unit, and converting this data into an easily understandable format on its LCD screen. The meter is designed to be highly adaptable, offering a "Fuel Gauge Resistance Setting" that allows it to be calibrated to a wide range of fuel sender units found in various motorcycle and scooter models. This adaptability is crucial for ensuring compatibility across different vehicle manufacturers and models, making it a versatile aftermarket accessory.

Beyond simple fuel level display, the KOSO Fuel Meter incorporates a "Fuel Warning Setting." This feature allows the user to define a specific low fuel threshold, expressed as a percentage, at which the meter will activate a warning. This proactive alert system is invaluable for preventing situations where a driver might unknowingly run out of fuel, providing ample time to locate a refueling station. The warning threshold is customizable, enabling users to set it according to their preferences and typical driving habits, ranging from 0% to 25% of the tank's capacity.

A unique and advanced feature of the KOSO Fuel Meter is its "Fuel Learning Setting." This mode is particularly useful when the exact resistance values of the vehicle's fuel sender unit are unknown or when a more precise calibration is desired. In this learning mode, the meter can be taught the "empty" and "full" fuel levels by having the user physically adjust the fuel in the tank to these states and then confirming them on the meter. This self-calibration capability ensures a highly accurate fuel reading tailored specifically to the individual vehicle's fuel system, overcoming potential discrepancies that might arise from generic resistance settings.

The meter's interface is designed for simplicity and ease of use, primarily relying on a single button for navigation and setting adjustments. A short press of the button is used for changing values or confirming selections, while a long press (3 seconds) is typically used to enter or exit setting menus. This intuitive control scheme minimizes complexity, allowing users to configure the meter without extensive technical knowledge.

Usage Features

Installation of the KOSO Fuel Meter is designed to be straightforward, although it requires careful attention to wiring connections. The meter comes with essential accessories, including the LCD meter unit, mid-way connectors, and Velcro for mounting. The Velcro allows for flexible placement of the meter on the dashboard or any desired surface, ensuring it is easily visible to the driver.

The wiring process involves connecting the meter to three main points: the DC 12V main power switch (for power), the vehicle's ground (for electrical return), and the original fuel level signal wire (for fuel level data). The manual provides clear color-coded wiring references for common motorcycle brands like Yamaha, Honda, Suzuki, Kawasaki, Kymco, SYM, and PGO, simplifying the identification of the correct wires. This detailed guidance is critical for a successful installation and to prevent damage to the meter or the vehicle's electrical system.

Once installed, the meter's setup involves configuring the fuel gauge resistance. The manual provides a comprehensive reference table listing resistance values for numerous motorcycle and scooter models, which users can select from. If a specific model is not listed, or for enhanced accuracy, the "USER" mode can be selected, leading to the "Fuel Learning Setting" for a custom calibration. This flexibility ensures that the meter can be adapted to a wide array of vehicles, making it a universal solution for fuel monitoring.

The "Fuel Warning Setting" is a practical usage feature that enhances safety and convenience. By setting a personalized low fuel alert, drivers can avoid the stress and inconvenience of running out of fuel unexpectedly. The meter's ability to display both a graphical fuel bar and a percentage allows drivers to choose their preferred method of monitoring, catering to different visual preferences.

The compact size and lightweight design of the KOSO Fuel Meter make it unobtrusive and easy to integrate into a vehicle's cockpit. Its robust construction is designed to withstand typical operating temperatures, ensuring reliable performance in various environmental conditions.

Maintenance Features

The KOSO Fuel Meter is designed for durability and minimal maintenance. However, proper installation is key to its longevity and accurate operation. The manual explicitly warns against breaking or modifying wire terminals and advises against pulling wires during installation to prevent short circuits. These precautions are essential "maintenance" steps during the initial setup phase to ensure the device functions correctly from the start.

The troubleshooting section of the manual serves as a primary maintenance guide for common issues. It addresses scenarios such as the meter not powering on or the fuel gauge displaying incorrectly. For power issues, it directs users to check wiring connections, fuses, and the battery's condition, emphasizing that a weak or broken battery might not supply sufficient DC 12V power. For incorrect fuel readings, it advises checking the fuel tank for actual fuel content, verifying wiring connections to the fuel sender, and confirming the meter's resistance settings. This systematic approach allows users to diagnose and resolve minor problems without professional assistance.

The manual also highlights the importance of correct wiring for the fuel signal, specifically cautioning against parallel connections with the original fuel sensor if it is an electronic type. Incorrect wiring in this area can lead to the fuel gauge not displaying correctly or even damage to the meter. This specific warning underscores a critical "maintenance" aspect related to installation integrity.

The device is not designed for user disassembly or modification beyond the described installation and setting procedures. Any internal examination or maintenance is explicitly stated to be performed by professionals. This ensures the integrity of the device and prevents potential damage from untrained handling.

In essence, the maintenance of the KOSO Fuel Meter primarily revolves around ensuring a correct initial installation, adhering to the specified wiring guidelines, and utilizing the provided troubleshooting steps for any operational anomalies. Its robust design and clear instructions aim to provide a reliable and long-lasting fuel monitoring solution with minimal ongoing user intervention.

Koso Mini3 Specifications

General IconGeneral
Display TypeLCD
Weight50g
Resolution0.1 km/h
Accuracy±1 km/h
Temperature Range-10°C to 60°C
Measurement Range0 to 360 km/h
DisplayDigital

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