1. Introduction and Product Overview
The Futaba AEC17 Heavy Duty J-Series Servo Extension is designed to extend the reach of your servo connections in remote-controlled vehicles and other applications. This extension cable provides a reliable link between your receiver and servo, ensuring proper signal transmission over longer distances.
1.1 Package Contents
- One (1) Futaba AEC-17 20-inch Heavy Duty Servo Extension Cord with J Connector
2. Setup and Installation
This servo extension features a male connector on one end and a female connector on the other, facilitating straightforward integration into existing servo systems.
2.1 Connecting the Extension
- Identify Connectors: Locate the male connector on your servo and the female connector on your receiver (or vice versa, depending on your setup). The extension cable has one male and one female J-series connector.
- Connect Servo to Extension: Carefully align the male connector of your servo with the female connector of the Futaba AEC17 extension. Push them together firmly until they are securely seated. The design ensures a snug fit to prevent accidental disconnection due to vibrations.
- Connect Extension to Receiver: Align the male connector of the Futaba AEC17 extension with the female port on your receiver. Push them together firmly.
- Secure Wiring: Ensure all connections are secure and that the wiring is routed away from moving parts or potential pinch points. The heavy 20-gauge wire is designed to handle higher current loads, providing reliable performance.

Image: This image displays the Futaba AEC17 Heavy Duty Servo Extension. It clearly shows both the male and female J-series connectors, along with the red, black, and white wires. The connectors are designed to fit snugly, preventing accidental disconnection.
3. Operating Instructions
Once properly installed, the Futaba AEC17 servo extension operates passively, extending the electrical signal path between your receiver and servo. No specific operational steps are required for the extension itself beyond ensuring a secure connection.
- Verify that the servo connected via the extension responds correctly to commands from your transmitter.
- Regularly inspect connections for any signs of loosening, especially after periods of heavy vibration or impact.
4. Maintenance
Proper maintenance ensures the longevity and reliability of your servo extension.
- Cleaning: Keep connectors free from dirt, dust, and moisture. Use a soft, dry brush or compressed air to clean the pins if necessary.
- Inspection: Periodically inspect the wire for any signs of fraying, cuts, or damage to the insulation. Check the connectors for bent pins or cracks in the plastic housing.
- Storage: Store the extension in a clean, dry environment when not in use. Avoid extreme temperatures.
5. Troubleshooting
If you experience issues with your servo system after installing the extension, consider the following troubleshooting steps:
- No Servo Response:
- Ensure all connections (servo to extension, extension to receiver) are fully seated and secure.
- Check for bent or broken pins on both the extension and the servo/receiver connectors.
- Test the servo directly connected to the receiver (without the extension) to rule out a servo or receiver issue.
- Intermittent Servo Operation:
- Verify that the connectors are not loose and are resistant to vibration.
- Inspect the wire for any damage that might cause intermittent signal loss.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | FUTM4147 |
| Product Dimensions | 2.38 x 2.38 x 0.38 inches (approximate connector dimensions, cable length 20 inches / 500mm) |
| Item Weight | 0.353 ounces |
| Wire Gauge | 20-gauge (Heavy Duty) |
| Connector Type | Futaba J-Series (1x Male, 1x Female) |
| Cable Length | 500mm (20 inches) |
7. Warranty and Support
For specific warranty information, please refer to the documentation provided with your original purchase or contact Futaba customer support directly. General support for installation and troubleshooting can often be found through official Futaba resources or authorized dealers.
It is recommended to retain your proof of purchase for any warranty claims.





