BAFANG Mid Motor EB-Bus 1T4 Cable Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your BAFANG Mid Motor EB-Bus 1T4 Cable. This cable is designed to connect multiple electric bike components to a BAFANG mid-drive motor conversion kit, ensuring proper functionality and integration.

2. Product Features

• Multi-Component Connectivity: The 1T4 cable allows for the connection of up to four peripheral components (e.g., display, throttle, brake levers) to your BAFANG mid-drive motor system.
• Universal Compatibility: Designed for seamless integration with BAFANG BBS and BBSHD mid-drive motor conversion kits.
• Waterproof Connectors: Equipped with IP65-rated waterproof connectors to ensure reliable performance in various weather conditions.
• Durable Construction: Manufactured from robust plastic materials for long-lasting use.

3. Specifications

4. Setup and Installation

Proper installation of the EB-Bus 1T4 cable is crucial for the safe and efficient operation of your electric bike. Follow these steps carefully:

4.1. Unboxing and Inspection

Carefully remove the 1T4 cable from its packaging. Inspect the cable and all connectors for any signs of damage. Ensure the cable length matches your requirements (approximately 136 cm for the 1T4 cable).

Figure 1: BAFANG EB-Bus 1T4 Cable with 136cm length indication.

4.2. General Cable Overview

The 1T4 cable features one main 8-pin male connector that connects to the motor controller, and four branched connectors for various peripherals.

Figure 2: Overview of the BAFANG EB-Bus 1T4 Cable.

4.3. Connecting to the Motor Controller

Locate the 8-pin male connector on the 1T4 cable. This connector is designed to plug directly into the corresponding port on your BAFANG mid-drive motor controller. Ensure the arrows on both connectors align before gently pushing them together until they click securely.

Figure 3: Male 8-Pin (M8.4) connector for motor connection.

4.4. Connecting Peripherals

The four branched connectors are for your display, throttle, and brake levers. Each connector is color-coded or uniquely shaped to prevent incorrect connections. Refer to the diagram below for proper identification:

Figure 4: Identification of branched connectors.

• Display (5-Pin Female, Green): Connect the green 5-pin connector to your e-bike display.
• Throttle (3-Pin Male, Yellow): Connect the yellow 3-pin male connector to your thumb throttle.
• Brake Levers (3-Pin Female, Yellow): Connect the two yellow 3-pin female connectors to your left and right brake levers.

4.5. Final Wiring Harness Assembly

Once all components are connected, ensure all connections are secure and waterproof. Route the cables neatly along your bike frame, securing them with zip ties or cable clips to prevent snagging or damage during riding.

5. Operating Instructions

After successful installation, your e-bike components connected via the 1T4 cable will function as follows:

• Throttle Operation: The thumb throttle provides on-demand power assistance. Engage the throttle to activate the motor and propel the bike.
• Brake Lever Functionality: The connected brake levers will cut off motor power when engaged, ensuring safe braking.
• Display Interaction: The display will show essential ride information and allow you to adjust assistance levels and other settings, depending on your specific display model.

6. Maintenance

To ensure the longevity and optimal performance of your BAFANG EB-Bus 1T4 Cable, consider the following maintenance tips:

• Regular Inspection: Periodically check all cable connections for tightness and signs of wear or damage.
• Cleaning: Keep the connectors clean and free from dirt, dust, and moisture. Use a soft, dry cloth for cleaning.
• Avoid Stress: Do not pull on the cables forcefully or subject them to sharp bends, which can damage internal wiring or connectors.
• Water Protection: While the connectors are waterproof (IP65), avoid prolonged submersion or high-pressure washing directly on the connections.

7. Troubleshooting

If you encounter issues with your EB-Bus 1T4 cable or connected components, consider these troubleshooting steps:

• No Power/Functionality:
  • Ensure all connectors are fully seated and properly aligned.
  • Check the main 8-pin connection to the motor controller.
  • Verify that your e-bike battery is charged and properly connected to the motor system.
• Intermittent Functionality:
  • Inspect cables for any visible cuts, pinches, or damage.
  • Ensure waterproof seals on connectors are intact.
• Component Not Responding (e.g., throttle, display):
  • Confirm the specific component's connector is correctly plugged into the appropriate branch of the 1T4 cable (refer to Figure 4).
  • Test the component if possible with a known working cable or system to rule out component failure.
• Cable Length Discrepancy:
  • The standard 1T4 cable length is approximately 136 cm. If you received a cable of significantly different length than expected, verify it against your order or contact your supplier.

If issues persist after following these steps, it is recommended to consult a qualified e-bike technician or contact BAFANG customer support.

8. Warranty and Support

For warranty information, please refer to the documentation provided with your BAFANG mid-drive motor kit or contact BAFANG directly. For technical support or inquiries regarding the EB-Bus 1T4 Cable, please reach out to your product retailer or the official BAFANG support channels.