Question: Where can I find a 2003 Ford Expedition radio wiring diagram? What are the 2003 Ford Expedition radio wiring harness color codes?
If you’re planning to upgrade the radio in your 2003 Ford Expedition or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 2003 Ford Expedition radio wiring diagram shows all the radio wire harness colors, speaker wire colors, and speaker sizes. Use this head unit pinout guide to help with your car stereo installation or to troubleshoot radio wiring issues in your 2003 Ford Expedition.
In This Guide
2003 Ford Expedition Car Stereo Wiring Diagram
This 2003 Ford Expedition radio wiring chart shows you all the 2003 Ford Expedition stereo wire color codes and their radio wire functions. This easy-to-follow guide can help you install a new car stereo or figure out problems with your stereo wiring harness and radio setup. If you don’t see the car radio wiring information you’re looking for, please feel free to ask your question at the bottom of this page.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Battery Constant Power Wire (12v+) | Light Green/Violet |
| Accessory Switched Power Wire (12v+) | Pink/Light Green |
| Ground Wire | Black/Light Green |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | Light Blue/Red |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | N/A |
| Amplifier Turn-On Wire | N/A |
| Amplifier Mute Wire | N/A |
| Amplifier Location | N/A |
2003 Ford Expedition Speaker Wiring Guide
This 2003 Ford Expedition speaker wiring guide provides all the speaker wire colors and speaker locations you need for an upgrade or replacement. Whether you are installing new speakers or troubleshooting your factory setup, this 2003 Ford Expedition chart makes it easy to identify each wire and where it connects. If you don’t see the car speaker wiring info you need, feel free to ask your question at the bottom of the page — we are here to help!
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Dash Center Speaker Positive Wire (+) | N/A |
| Dash Center Speaker Negative Wire (-) | N/A |
| Front Left Tweeter Positive Wire (+) | N/A |
| Front Left Tweeter Negative Wire (-) | N/A |
| Front Right Tweeter Positive Wire (+) | N/A |
| Front Right Tweeter Negative Wire (-) | N/A |
| Front Left Speaker Positive Wire (+) | Orange/Light Green |
| Front Left Speaker Negative Wire (-) | Light Blue/White |
| Front Right Speaker Positive Wire (+) | White/Light Green |
| Front Right Speaker Negative Wire (-) | Dark Green/Orange |
| Rear Left Tweeter Positive Wire (+) | N/A |
| Rear Left Tweeter Negative Wire (-) | N/A |
| Rear Right Tweeter Positive Wire (+) | N/A |
| Rear Right Tweeter Negative Wire (-) | N/A |
| Rear Left Speaker Positive Wire (+) | Gray/Light Blue |
| Rear Left Speaker Negative Wire (-) | Tan/Yellow |
| Rear Right Speaker Positive Wire (+) | Orange/Red |
| Rear Right Speaker Negative Wire (-) | Brown/Pink |
| Left Subwoofer Positive Wire (+) | N/A |
| Left Subwoofer Negative Wire (-) | N/A |
| Right Subwoofer Positive Wire (+) | N/A |
| Right Subwoofer Negative Wire (-) | N/A |
2003 Ford Expedition Speaker Sizes and Locations
This 2003 Ford Expedition speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 2003 Ford Expedition.
| Application | Speaker Size/Location |
|---|---|
| Dash Center Speaker Size | N/A |
| Dash Center Speaker Depth | N/A |
| Dash Center Speaker Location | N/A |
| Front Tweeter Size | N/A |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Front Speaker Size | 6″ x 8″ Speakers |
| Front Speaker Depth | 4″ Depth |
| Front Speaker Location | Front Doors |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speaker Size | 6″ x 8″ Speakers |
| Rear Speakers Depth | 4″ Depth |
| Rear Speaker Location | Rear Doors |
| Subwoofer Size | N/A |
| Subwoofer Depth | N/A |
| Subwoofer Location | N/A |
Questions and Answers
If you have any questions about your 2003 Ford Expedition radio installation, please don’t hesitate to post them at the bottom of this page. We’re committed to finding the answers you need, and members of the Modified Life community may also provide valuable insights into the car stereo information you’re looking for. Don’t hesitate to ask your car audio question; it could benefit others seeking the same answers!
Contribute
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9 thoughts on “2003 Ford Expedition Car Stereo Wiring Guide”
hello: i’m looking for the subwoofer wire(color) for the 2003 ford expedition EB. Thanks for you help.
Does anyone know how to hook up stock sub to a aftermarket radio in a 03 ford expedition eddie bauer
I need to find the reverse wire on a 2003 Expedition. Any suggestions? Thanks, David.
David, please refer to: 2003 Ford Expedition Car Alarm Wiring Diagram
I need help locating the factory amplifier on a 2003 ford expedition. anyone? help.
Does anyone have the wiring schematic for the 6 disk CD changer (external) used in the 2003 FORD Expedition (stereo with NAV), specifically the connection of the CD changer to the head unit? I want to either A.) Make my own AUX input or find an adapter that will replace and connect to the existing CD Changer connection (I don’t use the CD changer) or B.) purchase an aftermarket adapter. I found the (FRDN/PC-POD2 Ford iPod Adapter) but I really want the AUX 8mm connection. Thoughts and suggestions are appreciated!!
Lee, we suggest you purchase an automotive auxiliary input adapter. This adapter will allow you to input any Apple iPod, mp3 player or portable music player into your factory radio. This is the easiest and most cost effective way to add an audio input into your factory stereo. Here is the bluetooth transmitter you will need:
Aux Input Adapter for 2003 Ford Expedition
If you’ve never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck with your 2003 Ford Expedition bluetooth transmitter installation.
does anyone know why my 2003 Ford Expedition radio cut off and on it plays for five seconds and then turns off but than comes back on and then cut off again. its been doing this on both my ford cars. anyone know whats wrong with my 2003 Ford Expedition factory stereo?
Anthony, first double check ALL your fuses and make sure ALL your fuses are good. You can do this by using an Automotive Fuse Tester and making sure all of your fuses are not blown. If all of your fuses are good, check your after market radio connections behind your head unit. If all your wire connections are good, take a look at your battery terminals wires. Sometimes when your 2003 Ford Expedition battery wire terminals are not in full contact with battery posts because of corrosion, your radio could cut in and out. Try removing your battery wire terminals from the battery, clean them with a battery terminal cleaner and re-install. Hope this helps. Good luck with your 2003 Ford Expedition radio troubleshooting.