1. Introduction
This manual provides detailed instructions for the installation and use of the American International FWH694 Combo Wire Harness. This harness is designed to facilitate the installation of an aftermarket stereo into compatible Ford, Lincoln, and Mercury vehicles without cutting the factory wiring. It includes provisions for factory amplifier integration and factory subwoofer inputs.
2. Product Overview
The FWH694 Combo Wire Harness consists of a main wiring harness with vehicle-specific connectors, color-coded wires for various functions (power, ground, speakers, etc.), and RCA connectors for amplifier and subwoofer integration. It ensures a direct plug-and-play connection to your vehicle's factory harness.
Figure 2.1: Complete view of the American International FWH694 Combo Wire Harness, showing the main vehicle connector, aftermarket stereo connector, RCA plugs, and individual wires.
Figure 2.2: Detailed view of the harness, highlighting the RCA connectors for audio output to an amplifier and the vehicle-side plug.
3. Vehicle Compatibility
This wire harness is compatible with various Ford, Lincoln, and Mercury vehicles from 2003-2010. Please verify your vehicle's make, model, and year against the list below to ensure proper fitment.
Compatible Vehicles (2003-2010):
- Ford: Crown Victoria, Expedition, Explorer, Explorer Sport Trac, F-150, F-250, F-350, F-450, Five Hundred, Focus, Freestar, Freestyle, Fusion, Mustang, Thunderbird, Edge, Escape
- Lincoln: Town Car, Aviator, Mark LT, Zephyr, MKX, MKZ, Navigator
- Mercury: Marauder, Grand Marquis, Monterey, Montego, Milan, Mountaineer
Note: Specific years for each model are detailed in the product description. Always cross-reference with your vehicle's exact year and trim level.
4. Installation Instructions
Before beginning installation, ensure your vehicle's battery is disconnected to prevent electrical shorts or damage. Professional installation is recommended if you are unfamiliar with car audio wiring.
Required Tools:
- Wire strippers/crimpers
- Electrical tape or heat shrink tubing
- Pliers
- Screwdriver set (Phillips and flathead)
- Panel removal tools (optional, but recommended)
Installation Steps:
- Disconnect Battery: Disconnect the negative terminal of your vehicle's battery.
- Remove Factory Stereo: Carefully remove the factory stereo from the dashboard. Refer to your vehicle's service manual for specific instructions on panel removal.
- Identify Factory Harness: Locate the factory wiring harness connected to the back of your original stereo.
- Connect Aftermarket Stereo Harness:
Match the color-coded wires of the FWH694 harness to the corresponding wires on your aftermarket stereo's wiring harness. Typically, these connections include:
- Yellow: Constant 12V Power
- Red: Switched 12V Accessory Power
- Black: Ground
- Blue: Power Antenna / Amplifier Turn-On
- Orange: Illumination / Dimmer
- White/White-Black: Front Left Speaker (+/-)
- Gray/Gray-Black: Front Right Speaker (+/-)
- Green/Green-Black: Rear Left Speaker (+/-)
- Purple/Purple-Black: Rear Right Speaker (+/-)
Securely connect these wires using crimp connectors, solder, or other reliable methods. Insulate all connections with electrical tape or heat shrink tubing.
Figure 4.1: The two primary connectors of the FWH694 harness, illustrating how they connect to the vehicle and the aftermarket stereo.
- Connect RCA Cables (if applicable): If your aftermarket stereo has RCA outputs and your vehicle has a factory amplifier or subwoofer, connect the RCA plugs from the FWH694 harness to the corresponding RCA inputs on your aftermarket stereo.
- Connect FWH694 to Vehicle: Plug the vehicle-specific connector of the FWH694 harness into the factory wiring harness in your dashboard.
- Connect Aftermarket Stereo: Plug the completed aftermarket stereo harness into the back of your new stereo.
- Test System: Before fully reassembling the dashboard, reconnect the vehicle's battery and test the aftermarket stereo's functionality (power, sound from all speakers, balance, fade, radio, CD/USB, etc.).
- Reassemble Dashboard: Once all functions are verified, carefully reassemble the dashboard panels.
5. Operating Instructions
The FWH694 wire harness is a passive component that facilitates the connection between your vehicle's electrical system and an aftermarket stereo. Once correctly installed, its operation is integrated with your aftermarket stereo. Refer to your aftermarket stereo's user manual for specific operating instructions.
Ensure all connections are secure for consistent performance. The harness allows your aftermarket stereo to receive power, ground, and send audio signals to your vehicle's speakers and factory amplifier (if equipped).
6. Maintenance
The American International FWH694 Combo Wire Harness requires minimal maintenance. Periodically, you may want to:
- Check Connections: If you experience intermittent audio or power issues, inspect the connections behind the stereo to ensure they are still secure and free from corrosion.
- Cable Management: Ensure the harness and associated wiring are neatly tucked away and not pinched or exposed to excessive heat or moisture.
Avoid pulling on the wires or connectors forcefully, as this can damage the harness or vehicle wiring.
7. Troubleshooting
If you encounter issues after installing the FWH694 harness, consider the following troubleshooting steps:
- No Power to Stereo:
- Check the vehicle's fuse box for blown fuses related to the radio or accessory power.
- Verify the yellow (constant 12V) and red (switched 12V) wires are correctly connected and receiving power.
- Ensure the black (ground) wire has a solid connection.
- No Sound from Speakers:
- Confirm all speaker wires (white, gray, green, purple and their black-striped counterparts) are correctly matched and connected.
- If using a factory amplifier, ensure the blue (amplifier turn-on) wire is connected and sending a signal.
- Check the aftermarket stereo's settings (e.g., mute, volume, fader/balance).
- Intermittent Sound/Power:
- Inspect all wire connections for looseness or poor insulation.
- Ensure the harness connectors are fully seated into the factory vehicle harness and the aftermarket stereo.
- Factory Subwoofer/Amplifier Not Working:
- Verify the RCA connections for the factory amplifier/subwoofer are correctly plugged into the aftermarket stereo's outputs.
- Ensure the amplifier turn-on wire is properly connected.
If problems persist, consult a professional car audio installer or contact American International customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | FWH694 |
| Brand | American International |
| Product Dimensions | 6 x 0.7 x 9 inches |
| Item Weight | 0.15 Pounds (2.4 ounces) |
| Material | Copper, Polyvinyl Chloride (PVC) |
| Connector Type | RCA (for amplifier/subwoofer inputs) |
| Compatibility | Ford, Lincoln, Mercury vehicles (2003-2010) with factory amplifier integration |
9. Warranty and Support
For warranty information or technical support regarding your American International FWH694 Combo Wire Harness, please contact American International directly. Keep your purchase receipt as proof of purchase.
Manufacturer: American International
For further assistance, visit the American International website or contact their customer service department.
10. Safety Information
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Always handle with care and wash hands after use.
Always disconnect the vehicle's battery before performing any electrical work. Failure to do so can result in electrical shock, damage to the vehicle's electrical system, or fire. Ensure all connections are properly insulated to prevent short circuits.
