Metra 70-9003 Radio Wiring Harness Instruction Manual

1. ບົດແນະນຳ

This manual provides instructions for the Metra 70-9003 Radio Wiring Harness. This harness is designed to simplify the installation of an aftermarket radio into select Audi, BMW, and VW vehicles manufactured from 2002 onwards. It eliminates the need for cutting factory wiring, ensuring a clean and straightforward connection.

2. ເນື້ອໃນຊຸດ

• Metra 70-9003 Wire Harness
• ຄູ່ມືການສອນ

Image: The Metra 70-9003 Radio Wiring Harness as it appears in its retail packaging, showing the product label and part number.

3. ຂໍ້ມູນຈໍາເພາະ

4. ຄໍາແນະນໍາການຕິດຕັ້ງ

4.1 ໂດຍທົ່ວໄປແລ້ວview

The Metra 70-9003 harness is designed for direct plug-and-play integration with your vehicle's factory radio connectors. The color-coded wires on the aftermarket radio side simplify connections, eliminating the need for cutting the vehicle's original wiring.

4.2 ກ່ອນທີ່ທ່ານຈະເລີ່ມຕົ້ນ

• Ensure your vehicle is compatible with the Metra 70-9003 harness. Refer to the Metra Electronics Vehicle Fit Guide or contact Metra tech support for confirmation.
• Disconnect the vehicle's negative battery terminal to prevent electrical shorts during installation.
• Gather necessary tools, which may include wire strippers, crimpers, electrical tape, and a multimeter.

4.3 ການເຊື່ອມຕໍ່ສາຍໄຟ

Match the color-coded wires of the Metra 70-9003 harness to the corresponding wires of your aftermarket radio's harness. Common wire functions are listed below:

• ສີເຫຼືອງ: ພະລັງງານຄົງທີ່ 12V
• ສີແດງ: 12V Accessory Power (Switched)
• ສີດຳ: ດິນ
• ສີຟ້າ: ເສົາອາກາດພະລັງງານ / Amplifier ເປີດໄລຍະໄກ
• ສີສົ້ມ: ແສງໄຟ
• ສາຍ ລຳ ໂພງ: (Green, Purple, Gray, White - solid for positive, striped for negative)

Secure all connections using crimp connectors or solder, and insulate them with electrical tape or heat shrink tubing to prevent short circuits.

Image: The Metra 70-9003 Radio Wiring Harness, displaying its vehicle-specific connector and the color-coded wires for aftermarket radio integration.

4.4 ການເຊື່ອມຕໍ່ກັບພາຫະນະ

Plug the vehicle-specific connector of the Metra 70-9003 harness into the factory radio harness located in your dashboard. Then, connect the aftermarket radio's harness (which is now wired to the Metra harness) to the new radio unit.

4.5 Testing and Reassembly

• ເຊື່ອມຕໍ່ສະຖານີແບັດເຕີຣີລົບຂອງລົດຄືນໃໝ່.
• Turn on the vehicle and test the aftermarket radio's functions, including power, audio output (all speakers), balance, fade, and illumination.
• If all functions operate correctly, carefully reassemble the dashboard components.

5. ຄໍາແນະນໍາການດໍາເນີນງານ

The Metra 70-9003 is a passive wiring harness that facilitates the electrical connection of an aftermarket radio. Its operation is entirely dependent on the functionality of the connected aftermarket radio. Refer to your aftermarket radio's instruction manual for specific operating procedures and features.

6. ບໍາລຸງຮັກສາ

The Metra 70-9003 wiring harness requires no regular maintenance. To ensure continued performance, periodically check that all connections remain secure and are free from moisture, corrosion, or physical damage. Avoid pulling on the wires or connectors forcefully.

7. ການແກ້ໄຂບັນຫາ

7.1 No Power to Radio

• ກວດເບິ່ງກ່ອງຟິວຂອງລົດສໍາລັບຟິວທີ່ລະເບີດທີ່ກ່ຽວຂ້ອງກັບວິທະຍຸ ຫຼືພະລັງງານອຸປະກອນເສີມ.
• Verify the 12V constant (Yellow) and 12V accessory (Red) wires are correctly connected and receiving power using a multimeter.
• ໃຫ້ແນ່ໃຈວ່າແບັດເຕີຣີຂອງຍານພາຫະນະໄດ້ສາກໄຟເຕັມແລ້ວ ແລະ ເຊື່ອມຕໍ່ຢ່າງຖືກຕ້ອງ.

7.2 ບໍ່ມີສຽງຈາກລຳໂພງ

• Confirm all speaker wires (Green, Purple, Gray, White - solid for positive, striped for negative) are correctly matched and connected to the aftermarket radio.
• Check the aftermarket radio's settings for proper balance and fade.
• ຖ້າພາຍນອກ amplifier is used, ensure the remote turn-on wire (Blue) is connected and the amplifier ກໍາລັງໄດ້ຮັບພະລັງງານ.

7.3 Radio Not Turning Off with Ignition

• Verify the 12V accessory (Red) wire is connected to a switched power source that turns off with the vehicle's ignition.

7.4 ບັນຫາທົ່ວໄປ

• Double-check all wiring connections for looseness or incorrect pairing.
• Consult the aftermarket radio's manual for specific troubleshooting steps.
• For further assistance, contact Metra tech support.

8. ການຮັບປະກັນແລະການສະ ໜັບ ສະ ໜູນ

8.1 ຂໍ້ມູນການຮັບປະກັນ

The Metra 70-9003 Radio Wiring Harness comes with a 1-year limited warranty. Please retain your proof of purchase for all warranty claims.

8.2 ສະຫນັບສະຫນູນດ້ານວິຊາການ

Metra provides technical support 7 days a week for installation assistance. For contact information, please refer to the product packaging or visit Metra's official webເວັບໄຊ.