03 Accord Radio Wiring Diagram – Free Download

If you’re looking for an 03 Accord radio wiring diagram, you’ve come to the right place. In this article, we’ll go over everything you need to know about wiring your radio in your 03 Accord. We’ll cover everything from the tools you’ll need to the step-by-step process for wiring your radio.

Tools You’ll Need

Before you get started wiring your radio, there are a few tools you’ll need. These include:

  • Wire cutters
  • Wire strippers
  • Tape
  • Crimp connectors
  • Socket wrench set
  • Soldering iron (optional)

Make sure you have all of these tools before you get started, as they will make the process much easier.

Step-by-Step Process

Now that you have your tools, it’s time to start wiring your radio. Here’s a step-by-step process you can follow:

  1. Disconnect the negative battery cable from your car battery. This will prevent any accidental electrical shocks while you’re working on your radio.
  2. Remove the trim panel around your radio. This will expose the screws that hold the radio in place.
  3. Remove the screws that hold the radio in place and gently pull the radio out of the dash.
  4. Locate the wiring harness on the back of your radio. This is where you will be connecting your wires.
  5. Using your wire cutters, cut the wires on your new radio harness. Make sure you leave enough wire on each end to strip and connect to the existing harness.
  6. Strip the ends of the wires on both the existing and new harness. You should have a total of 18 wires that need to be connected.
  7. Match the wires on the new harness to the wires on the existing harness. Use crimp connectors to connect the wires together. Make sure you match the colors of the wires to ensure that you’re connecting the correct wires together.
  8. Once all the wires are connected, use electrical tape to wrap around the crimp connectors. This will help protect the connections from water and other debris.
  9. Plug the new harness into the back of your radio.
  10. Slide the radio back into the dash and secure it with the screws you removed earlier.
  11. Replace the trim panel around your radio.
  12. Reconnect the negative battery cable to your car battery.
  13. Test your new radio to make sure it’s working properly.

Additional Tips

Here are a few additional tips to keep in mind when wiring your radio:

  • Make sure you read the instructions that came with your new radio harness. They may provide additional information or specific instructions that differ from what we’ve outlined here.
  • If you’re unsure about anything during the process, consult a professional. Wiring your radio incorrectly can cause damage to your car or radio.
  • If you’re not comfortable using crimp connectors, you can use a soldering iron to connect the wires together instead.


Wiring your radio in your 03 Accord is a relatively simple process that can be completed with a few basic tools. By following the step-by-step process outlined in this article and keeping our additional tips in mind, you should be able to wire your radio in no time at all.

[Download] 03 Accord radio wiring diagram Free

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