When it comes to car audio, having a clear and accurate wiring diagram is crucial. If you own a 99 Ford Expedition and are looking for the radio wiring diagram, you’re in luck. In this article, we will provide you with a comprehensive guide on the 99 Ford Expedition radio wiring diagram.
What is a Radio Wiring Diagram?
A radio wiring diagram is a detailed schematic that illustrates the connections of the wires that run from the radio to the speakers, amplifier, and power source. It often includes color codes that distinguish each wire and its function.
Having a wiring diagram can make the installation of an aftermarket radio, speakers, or amplifier much easier, as it eliminates the guesswork of which wire is which.
99 Ford Expedition Radio Wiring Diagram
Before we dive into the wiring diagram, it’s important to note that the 99 Ford Expedition came with a variety of different radio configurations. The wiring diagram may vary depending on the model and year of your Expedition, so it’s important to cross-reference the diagram with your specific vehicle.
That being said, here is a general wiring diagram for the 99 Ford Expedition:
| Wire Color | Function |
|---|---|
| Gray/Light Blue | Left Front Speaker (+) |
| Tan/Yellow | Left Front Speaker (-) |
| White/Light Green | Right Front Speaker (+) |
| Dark Green/Orange | Right Front Speaker (-) |
| Orange/Light Green | Left Rear Speaker (+) |
| Pink/Light Blue | Left Rear Speaker (-) |
| Red/Yellow | Right Rear Speaker (+) |
| Black/Pink | Right Rear Speaker (-) |
| Yellow/Black | 12V Accessory |
| Red/Light Green | 12V Constant |
| Black/Green | Ground |
Left Front Speaker
The left front speaker wires are gray/light blue (positive) and tan/yellow (negative).
To connect an aftermarket radio to the left front speakers, you will need to splice the gray/light blue wire to the positive speaker wire and the tan/yellow wire to the negative speaker wire.
It’s important to note that some aftermarket radios may have different wire colors for each speaker. In this case, you will need to refer to the wiring diagram that comes with your specific radio.
Right Front Speaker
The right front speaker wires are white/light green (positive) and dark green/orange (negative).
Just like the left front speaker, you will need to splice the white/light green wire to the positive speaker wire and the dark green/orange wire to the negative speaker wire to connect an aftermarket radio.
Left Rear Speaker
The left rear speaker wires are orange/light green (positive) and pink/light blue (negative).
Connect the positive and negative wires of an aftermarket radio to the corresponding wires to get sound from the left rear speaker.
Right Rear Speaker
The right rear speaker wires are red/yellow (positive) and black/pink (negative).
Connect the positive and negative wires of an aftermarket radio to the corresponding wires to get sound from the right rear speaker.
Frequently Asked Questions
What if my Expedition has a factory amplifier?
If your Expedition has a factory amplifier, the wiring diagram will be different. It’s important to consult the wiring diagram for your specific vehicle and amplifier to ensure proper installation.
Can I install an aftermarket radio without splicing wires?
Yes, there are wiring harness adapters available that will allow you to connect an aftermarket radio without splicing any wires. These adapters are available at most car audio retailers or online.
What if the wire colors don’t match up?
If the wire colors on your aftermarket radio don’t match up with the colors on the wiring diagram, don’t panic. Most aftermarket radios include a wiring diagram that will correspond to the wire colors on the radio.
If you’re unsure, consult the instructions that came with your specific aftermarket radio.
Can I use the factory wiring to install an aftermarket amplifier?
Yes, you can use the factory wiring to install an aftermarket amplifier. However, it’s important to use a wiring diagram and make sure the wires are connected correctly to avoid damage to the amplifier or other components.
Do I need any special tools to install an aftermarket radio?
No, you don’t need any special tools to install an aftermarket radio. However, a wire stripper, crimping tool, and electrical tape can come in handy when splicing wires.
Conclusion
The 99 Ford Expedition radio wiring diagram is a helpful tool for anyone looking to install an aftermarket radio, speakers, or amplifier. With the right tools and some basic knowledge of car audio, you can install a new audio system in your Expedition and enjoy high-quality sound on the road.
