Metra 70-1004 Radio Wiring Harness Instruction Manual

Introduction

The Metra 70-1004 Radio Wiring Harness is designed to simplify the installation of an aftermarket car stereo in select 2005-up Kia and Hyundai vehicles. This harness connects directly to the factory wiring, eliminating the need to cut or splice the vehicle's original wiring. It provides power and speaker connections for your new radio, ensuring a clean and secure installation.

Safety Information

Always disconnect the vehicle's negative battery terminal before beginning any electrical installation to prevent short circuits and electrical damage. Ensure all connections are secure and properly insulated. If you are unsure about any step, consult a professional car audio installer.

Package Contents

• Metra 70-1004 Radio Wiring Harness (24-pin plug)
• Instruction Manual (this document)

Setup and Installation

This harness is designed for a direct plug-and-play connection to your vehicle's factory radio harness. It provides the necessary power and speaker connections for an aftermarket radio.

1. Prepare the Vehicle: Disconnect the negative terminal of the vehicle's battery. Remove the factory radio from the dashboard, following your vehicle's specific disassembly instructions.
2. Identify Connections: Locate the factory radio wiring harness in your vehicle. The Metra 70-1004 harness features a 24-pin connector designed to mate with this factory plug.
3. Connect to Aftermarket Radio: Match the wires from the Metra 70-1004 harness to the corresponding wires on your aftermarket radio's wiring harness. Typically, wire colors are standardized (e.g., yellow for constant power, red for accessory power, black for ground, white/white-black for front left speaker, etc.). Ensure all connections are secure, either by soldering and heat-shrinking or using crimp connectors.
4. Plug into Vehicle: Once the aftermarket radio's harness is fully connected to the Metra 70-1004 harness, plug the 24-pin connector of the Metra harness into the vehicle's factory radio harness.
5. Test and Reassemble: Reconnect the vehicle's negative battery terminal. Turn on the vehicle and test the aftermarket radio's functionality (power, sound from all speakers, fader/balance). If everything works correctly, carefully reassemble the dashboard.

Figure 1: The Metra 70-1004 Radio Wiring Harness. This image shows the harness with its 24-pin connector designed to interface with the vehicle's factory wiring, and the individual wires for connecting to an aftermarket radio.

Note on Additional Connectors: Some vehicles, particularly certain Kia models like the 2008 Kia Amanti, may have additional factory connectors (e.g., a 12-pin connector) that handle functions such as steering wheel controls or display information. The Metra 70-1004 harness primarily provides power and speaker connections via the 24-pin plug. If your vehicle has these additional functions and you wish to retain them (e.g., steering wheel controls), separate interfaces or adapters may be required and are not included with this wiring harness.

Operation

The Metra 70-1004 wiring harness facilitates the electrical connection between your vehicle's factory wiring and an aftermarket radio. Once correctly installed, the harness allows the aftermarket radio to receive power and transmit audio signals to the vehicle's speakers, functioning as intended by the radio manufacturer. There are no operational controls on the harness itself.

Maintenance

The Metra 70-1004 wiring harness requires no routine maintenance. Ensure that all connections remain secure and free from corrosion. If you need to remove or replace the aftermarket radio, follow the installation steps in reverse, ensuring the battery is disconnected before working with electrical components.

Troubleshooting

• No Power to Radio:
  • Check the vehicle's fuse box for blown fuses related to the radio or accessory power.
  • Verify that the yellow (constant power) and red (accessory power) wires from the harness are correctly connected to the aftermarket radio and receiving power.
  • Ensure the black (ground) wire is securely connected.
• No Sound from Speakers:
  • Confirm all speaker wires (e.g., white, white/black, gray, gray/black) are correctly matched and securely connected between the harness and the aftermarket radio.
  • Check the aftermarket radio's fader and balance settings.
  • Ensure the speaker wires are not shorting to ground or each other.
• Steering Wheel Controls Not Working:
  • The Metra 70-1004 harness does not provide connections for steering wheel controls. A separate steering wheel control interface (sold separately) is required to retain this functionality.
• Intermittent Operation:
  • Inspect all wire connections for looseness or poor contact. Re-crimp or re-solder as necessary.
  • Ensure the harness is fully seated in the vehicle's factory connector.

Specifications

Warranty Information

Specific warranty details for the Metra 70-1004 wiring harness are typically provided by the retailer or manufacturer at the time of purchase. Please refer to your purchase documentation or the official Metra website for the most current warranty policy. Generally, Metra products are covered against defects in materials and workmanship for a limited period.

Customer Support

For technical assistance, installation questions, or warranty claims, please contact Metra Electronics customer support directly. You can typically find their contact information, including phone numbers and support portals, on their official website: www.metraonline.com.