03 Chevy Cavalier Radio Wiring Diagram

If you’re looking to install an aftermarket radio into your 03 Chevy Cavalier, you’ll need a wiring diagram to help you connect the wires correctly. In this article, we’ll cover everything you need to know about the 03 Chevy Cavalier radio wiring diagram.

What You’ll Need

Before we get started with the wiring diagram, there are a few items you’ll need to have on hand to complete the installation process:

  • A replacement radio
  • A wiring harness adapter
  • A dash kit
  • A wire stripper/crimping tool

The Wiring Diagram

Here is the wiring diagram for the 03 Chevy Cavalier radio:

Wire Color Function
Orange 12V Constant
Yellow Switched 12V
Black Ground
Gray Front Right Speaker (+)
Gray/Black Front Right Speaker (-)
White Front Left Speaker (+)
White/Black Front Left Speaker (-)
Green Rear Left Speaker (+)
Green/Black Rear Left Speaker (-)
Purple Rear Right Speaker (+)
Purple/Black Rear Right Speaker (-)
Blue/White Amplifier Turn-On

Be sure to match the wires according to the function and color from the diagram with the wires in your car’s wiring system to avoid mistakes. This will ensure that your new radio is installed properly and functions as expected.


Q: Why do I need a wiring harness adapter?

A: The wiring harness adapter is necessary because the radio wiring in your car is different from the wiring of an aftermarket radio. The adapter helps you connect the wires correctly and safely, without damaging the car’s electrical system or the aftermarket radio.

Q: What is a dash kit?

A: A dash kit is a plastic or metal bracket that fits around the aftermarket radio to make it fit more seamlessly into the car’s dash. This helps to prevent gaps or unsightly spaces around the radio, and also provides a secure mount for the radio.

Q: Can I install an aftermarket radio myself?

A: Yes, installing an aftermarket radio is a DIY project that can be done by anyone with basic electrical knowledge and a few tools. However, if you’re unsure about any part of the installation process, it’s always best to consult a professional to avoid damaging your car or the new radio.

Q: Will installing an aftermarket radio void my car’s warranty?

A: Generally, installing an aftermarket radio will not void your car’s warranty. However, if the installation causes damage to the car’s electrical system, that damage may not be covered under warranty. It’s always best to consult your car’s manufacturer or dealership for more information on warranty coverage.

Q: How do I know if my new radio is compatible with my 03 Chevy Cavalier?

A: Most aftermarket radios will come with a list of compatible cars in the product specifications. Be sure to check that your car is on the list before purchasing the new radio to ensure compatibility.

That’s everything you need to know about the 03 Chevy Cavalier radio wiring diagram. With the right tools and some basic electrical knowledge, you can easily install an aftermarket radio in your car and enjoy a better audio experience on the road.