JRAHK 6G Sine WXGN200
JRAHK Electric Scooter Controller Kit S866 User Manual
Model: 6G Sine WXGN200
Brand: JRAHK
Product Overview
This JRAHK Electric Scooter Controller Kit S866 is designed for 36V-60V electric bikes, scooters, and skateboards. It serves as a reliable replacement for old or damaged controllers, featuring a brushless design for enhanced efficiency and extended service life. The kit includes the controller and an S866 display, providing essential control and monitoring functionalities for your electric vehicle. It incorporates multiple protection mechanisms, including overcurrent, overvoltage, short circuit, and overheating protection, ensuring safe and stable operation.

Figure 1: The JRAHK Electric Scooter Controller Kit S866, showing the red controller unit and the black S866 display unit with its connecting cable.
Setup and Installation
Proper installation of the controller kit is crucial for safe and optimal performance. This section outlines the general steps for connecting the controller and display to your electric bicycle or scooter. Due to variations in wiring color codes among different electric vehicle manufacturers, careful identification of each wire's function is essential.
Wiring Diagram and Connections
Refer to the following diagram for identifying the various connection points on the controller. Each numbered point corresponds to a specific function.

Figure 2: Detailed wiring diagram illustrating the numbered connection points on the controller. This diagram helps in identifying the purpose of each wire for correct installation.
- Battery Power: Connects to the main battery power supply.
- Motor Phase Wire: Connects to the motor's phase wires (typically three wires).
- Tail Light Power: Provides power for the rear tail light.
- LCD: Connects to the S866 display unit.
- Intelligent Learning Line: Used for initial motor pairing and learning.
- Throttle: Connects to the throttle mechanism for speed control.
- Reverse: (If applicable) For reverse functionality.
- Electronic Brake (E-ABS): Connects to the electronic braking system.
- Hall Sensor: Connects to the motor's Hall sensors.
- PAS (Pedal Assist System): Connects to the pedal assist sensor.
- High Level Braking: Connects to high-level brake signal.
- Low Level Braking: Connects to low-level brake signal.
- Brake Light Power: Provides power for the brake light.
Connecting Headlights
The controller kit supports connection to external headlights. Ensure proper polarity when connecting the headlight to the designated output from the controller.

Figure 3: Illustration showing how to connect a headlight to the controller. The green connector from the controller is designed for headlight power output.
General Installation Tips
- Power Disconnection: Always disconnect the battery power before performing any wiring or installation.
- Wire Identification: Carefully identify each wire's function on your electric vehicle before connecting to the controller. If color codes do not match, use a multimeter to verify voltage and signal types.
- Secure Connections: Ensure all connections are firm and properly insulated to prevent short circuits.
- Mounting: Mount the controller and display securely in a location protected from water and physical damage.

Figure 4: The JRAHK controller and S866 display unit shown installed on an electric bicycle, demonstrating typical mounting positions.
Operating the S866 Display
The S866 display provides real-time information and control over your electric vehicle's functions. It typically shows speed, battery level, mileage, and assist levels.
Display Features and Controls

Figure 5: Close-up of the S866 display unit, indicating that "36V" on the display signifies a minimum voltage requirement of 36V and not a maximum voltage.
- Power Button: Press and hold to turn the display and controller ON/OFF.
- "+" Button: Increases assist level, navigates menus, or activates certain functions (e.g., holding for 3 seconds might turn on lights on some setups).
- "-" Button: Decreases assist level, navigates menus.
- Information Display: The screen typically shows:
- Current Speed (MPH/KMH)
- Battery Charge Level
- PAS (Pedal Assist System) Level
- ODO (Odometer) / TRIP (Trip Distance)
- Error Codes (if any)
Note: Specific button functions for features like lights or horn may vary depending on the overall wiring and compatibility with your vehicle's existing components. Some features may require custom wiring or may not be fully integrated.
Maintenance
To ensure the longevity and reliable performance of your JRAHK Electric Scooter Controller Kit, follow these maintenance guidelines:
- Keep Dry: Protect the controller and display from water and excessive moisture. While the unit is designed to be robust, prolonged exposure to water can cause damage.
- Cleanliness: Periodically clean the exterior of the controller and display with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Temperature: Operate and store the unit within recommended temperature ranges. Avoid extreme heat or cold, which can affect electronic components.
- Cable Inspection: Regularly inspect all cables and connectors for signs of wear, fraying, or corrosion. Ensure all connections remain secure.
- Physical Damage: Avoid dropping or subjecting the controller to strong impacts, as this can damage internal components.
Troubleshooting
This section provides solutions to common issues you might encounter with your JRAHK Electric Scooter Controller Kit.
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller/Display not powering on. |
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| Motor not responding to throttle. |
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| Lights/Horn not working after installation. |
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| Display shows error code. |
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Specifications
Key technical specifications for the JRAHK Electric Scooter Controller Kit S866:
| Feature | Detail |
|---|---|
| Model Name | 6G Sine WXGN200 |
| Output Power | 400W |
| Output Voltage | 36V-60V |
| Max Current | 20A |
| Material | Aluminum Alloy |
| Net Weight | 367g (approximately 12.95 ounces) |
| Product Dimensions (Controller) | Approximately 90mm x 56mm x 32mm (3.54" x 2.2" x 1.26") |
| Protections | Overcurrent, Overvoltage, Short Circuit, Overheating |

Figure 6: Diagram illustrating the maximum dimensions of the controller unit: 90mm x 56mm x 32mm.

Figure 7: The controller kit on a scale, showing its net weight of 367 grams.
Warranty and Support
Specific warranty terms and direct customer support contact information for the JRAHK Electric Scooter Controller Kit S866 are not provided in the product details. For any inquiries regarding warranty claims, technical support, or replacement parts, please refer to the retailer or platform where the product was purchased. They may be able to provide further assistance or direct you to the appropriate support channels.
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