Introduction
The Axxess AXLOC-FD2 is a 2-channel line output converter designed to integrate aftermarket amplifiers with factory audio systems in select Ford vehicles from 2011 and newer. This device converts high-level speaker signals from the factory radio into low-level RCA signals, providing a clean and adjustable output for your amplifier. It also provides a 12-volt accessory output for amplifier turn-on.
Safety Information
- Always disconnect the vehicle's negative battery terminal before beginning any installation.
- Ensure all wiring connections are secure and properly insulated to prevent short circuits.
- Consult a professional car audio installer if you are unsure about any part of the installation process.
- Do not operate the vehicle's audio system at excessively high volumes for prolonged periods, as this may cause hearing damage.
- Mount the converter in a location that is protected from moisture and excessive heat.
Package Contents
Verify that all items are present before beginning installation:
- AXLOC-FD2 Line Output Converter Module
- Vehicle-specific wiring harness
- RCA output cables
- Remote turn-on wire

Installation Instructions
This section outlines the general installation procedure. Specific vehicle disassembly instructions are beyond the scope of this manual. Refer to a vehicle-specific service manual for dash removal and access to the factory radio wiring.
Tools Required:
- Wire strippers/crimpers
- Electrical tape or heat shrink tubing
- Multimeter
- Panel removal tools
- Screwdrivers/socket set
Wiring Diagram and Connections:
- Disconnect Battery: Before starting, disconnect the negative terminal of the vehicle's battery to prevent electrical shorts.
- Access Factory Radio: Carefully remove the necessary trim panels and components to gain access to the back of the factory radio.
- Identify Speaker Wires: Using a vehicle-specific wiring diagram or a multimeter, identify the factory speaker output wires (positive and negative for each channel) from the factory radio harness.
- Connect Input Harness: Connect the vehicle-specific wiring harness provided with the AXLOC-FD2 to the factory radio harness. This harness will typically plug in-line with the factory radio, intercepting the speaker outputs.
- Connect AXLOC-FD2 Module: Plug the main connector from the vehicle-specific harness into the AXLOC-FD2 module.
- Connect RCA Outputs: Connect the RCA output cables from the AXLOC-FD2 module to the RCA inputs of your aftermarket amplifier.
- Connect Remote Turn-On: The AXLOC-FD2 provides a 12-volt accessory output (remote turn-on) for your amplifier. Connect this wire to the remote turn-on input of your amplifier. This eliminates the need to find a separate switched 12V source.
- Ground Connection: Ensure the AXLOC-FD2 module has a solid ground connection. The vehicle-specific harness should provide this, but always verify.
- Mounting: Securely mount the AXLOC-FD2 module in a suitable location, away from heat and moisture, ensuring it does not interfere with any moving parts or vehicle components.


Operating Instructions
Gain Adjustment:
The AXLOC-FD2 features adjustable gain controls to match the output level of the factory radio to the input sensitivity of your aftermarket amplifier. Proper gain setting is crucial for optimal sound quality and to prevent distortion.
- Initial Setting: Start with the gain controls on the AXLOC-FD2 set to their minimum position (fully counter-clockwise).
- Amplifier Gain: Set the gain control on your aftermarket amplifier to its minimum position.
- Play Music: Play a dynamic piece of music through your factory radio at about 75% of its maximum volume.
- Adjust AXLOC-FD2 Gain: Slowly increase the gain controls on the AXLOC-FD2 until you hear a slight distortion, then back off slightly until the sound is clean.
- Adjust Amplifier Gain: Once the AXLOC-FD2 gain is set, slowly increase the gain control on your amplifier until the desired volume is achieved without distortion.
- Fine-tuning: Make small adjustments to both the AXLOC-FD2 and amplifier gains as needed to achieve the best sound quality. Avoid setting gains too high, as this will introduce distortion and can damage speakers.
Maintenance
The Axxess AXLOC-FD2 is designed for reliable, maintenance-free operation. No user-serviceable parts are inside. To ensure longevity:
- Keep the unit free from dust and debris.
- Ensure all wiring connections remain secure.
- Avoid exposing the unit to extreme temperatures or moisture.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No audio output from amplifier |
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| Distorted or poor sound quality |
|
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| Hissing or whining noise |
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Specifications
- Model: AXLOC-FD2
- Channels: 2-Channel
- Input Type: High-level (speaker level)
- Output Type: Low-level (RCA)
- Compatibility: Ford vehicles 2011-Up
- Features: Adjustable gain, 12V remote turn-on output
- Item Weight: Approximately 1.37 pounds
- Package Dimensions: Approximately 10.39 x 10.31 x 4.92 inches
Warranty and Support
For warranty information or technical support, please refer to the manufacturer's official website or contact their customer service department. Keep your proof of purchase for warranty claims.
Manufacturer: Axxess
Website: axxessinterfaces.com (Example link, actual link may vary)