The 2003 Mitsubishi Eclipse stereo wiring can be a bit tricky, but with the right information, you can successfully install an aftermarket radio. This guide will provide you with the essential details you need for a smooth installation process.

Wiring Harness

For the 2003 Mitsubishi Eclipse, you'll need a specific wiring harness to connect your new stereo to the vehicle's electrical system. The recommended harness is the Metra 71-7001 or an equivalent model. This harness is designed to fit the factory connectors and make the installation process much easier.

Wire Colors and Functions

Here's a breakdown of the wire colors and their functions for the 2003 Mitsubishi Eclipse:

  • Red/Black: 12V Constant Power
  • Blue: 12V Switched Power
  • Black: Ground
  • Green/White: Illumination
  • White/Blue: Left Front Speaker (+)
  • Black/Blue: Left Front Speaker (-)
  • White/Red: Right Front Speaker (+)
  • Black/Red: Right Front Speaker (-)
  • Yellow/Blue: Left Rear Speaker (+)
  • Gray/Blue: Left Rear Speaker (-)
  • Yellow/Red: Right Rear Speaker (+)
  • Gray/Red: Right Rear Speaker (-)

Installation Tips

When installing your new stereo, keep these important points in mind:

1. Disconnect the battery before starting any work on the electrical system.

2. Use a multimeter to verify wire functions if you're unsure.

3. Solder and heat-shrink all connections for the best reliability.

4. If your Eclipse has a factory amplifier, you may need an additional adapter to retain its functionality.

5. Some models may have slight variations in wire colors. Always double-check before making connections.

Special Considerations

The 2003 Eclipse may have a factory amplifier located behind the glove box. If you're replacing the head unit but want to keep the factory amp, you'll need to use the appropriate adapter to maintain proper functionality.

For vehicles equipped with the Rockford Fosgate premium audio system, additional steps may be necessary to integrate a new head unit while retaining the factory amplifier and subwoofer.

Troubleshooting

If you encounter issues during installation, here are some common problems and solutions:

  • No power to the radio: Check the constant and switched power connections.
  • No sound from speakers: Verify speaker wire connections and polarity.
  • Illumination not working: Ensure the illumination wire is properly connected.

Remember, if you're not comfortable with car audio installation, it's always best to seek professional help to avoid damaging your vehicle's electrical system.

FAQs About 2003 Mitsubishi Eclipse Stereo Wiring

    • Do I need a special tool to remove the factory radio?
      Yes, you may need a radio removal tool to safely extract the factory unit without damaging the dash.
    • Can I install a double DIN radio in my 2003 Eclipse?
      Yes, the 2003 Eclipse can accommodate a double DIN radio with the appropriate installation kit.
    • Will I lose my steering wheel controls when installing an aftermarket radio?
      You may need an additional steering wheel control adapter to retain this functionality with an aftermarket unit.

By following this guide and using the correct wiring harness, you should be able to successfully install a new stereo in your 2003 Mitsubishi Eclipse. Always prioritize safety and proper connections to ensure the best performance from your new audio system.