Introduction
This manual provides comprehensive instructions for the proper installation and use of the Metra 70-2001 Radio Wiring Harness. This harness is specifically designed to facilitate the installation of an aftermarket car stereo into compatible General Motors vehicles, ensuring a secure and reliable electrical connection without cutting factory wiring.
Consignes de sécurité
- Débranchez toujours la borne négative de la batterie du véhicule avant de commencer toute installation électrique afin d'éviter les courts-circuits et les chocs électriques.
- Ensure all wiring connections are secure and properly insulated using electrical tape, crimp connectors, or heat shrink tubing. Loose connections can lead to electrical malfunctions or fire hazards.
- Consultez un technicien automobile professionnel si vous avez des doutes sur une quelconque étape du processus d'installation.
- Do not modify the wiring harness. Any alterations may void the product warranty and could cause damage to your vehicle's electrical system.
- Portez un équipement de protection individuelle approprié, tel que des lunettes de sécurité, lors de l'installation.
Compatibilité des véhicules
The Metra 70-2001 Radio Wiring Harness is compatible with select General Motors vehicles manufactured between 1994 and 2004. This includes various models from Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac within this year range.
Important: Always verify that your vehicle's factory wiring harness connector physically matches the Metra 70-2001 connector before proceeding with installation. Vehicle models and trim levels can vary, and some vehicles within the specified range may use a different connector.
Contenu du colis
À l'ouverture du colis, assurez-vous que tous les composants sont présents et non endommagés :
- Metra 70-2001 Radio Wiring Harness (GM 32-Pin Connector)

Image: The Metra 70-2001 Radio Wiring Harness shown in its retail packaging, indicating the product model and compatibility.
Instructions d'installation (Configuration)
Outils requis
- Pinces à dénuder
- Pinces à sertir
- Ruban électrique ou gaine thermorétractable
- Multimètre (facultatif, pour vérifier les connexions)
- Panel Removal Tools (for vehicle interior trim)
Étapes de pré-installation
- Déconnecter la batterie : Locate your vehicle's battery and disconnect the negative (-) terminal to prevent electrical hazards.
- Retirer l'autoradio d'origine : Carefully remove the factory radio from the dashboard. This typically involves removing trim panels and unscrewing the radio unit.
- Identifier le faisceau de câbles d'usine : Locate the factory wiring harness that was connected to the original radio.
Connexions de câblage
The Metra 70-2001 harness is designed to connect directly to your aftermarket radio's wiring. Match the wires from your aftermarket radio to the corresponding wires on the Metra 70-2001 harness. Refer to the wiring diagram section below for standard color codes. Ensure each connection is secure and properly insulated.

Image: The Metra 70-2001 Radio Wiring Harness showing the multi-colored wires ready for connection to an aftermarket radio.
Étapes finales
- Faisceau de connexion : Plug the Metra 70-2001 harness into the vehicle's factory radio connector.
- Fonctionnalité de test : Reconnect the vehicle's negative battery terminal. Turn on the ignition and test the aftermarket radio's power, sound, and other functions.
- Sécuriser et réassembler : Once confirmed working, carefully tuck away excess wiring, mount the aftermarket radio, and reassemble any removed dashboard trim panels.
Schéma de câblage
The following table outlines the standard wire color codes for the Metra 70-2001 harness. It is crucial to cross-reference these with the wiring diagram provided with your specific aftermarket radio, as color codes can vary between manufacturers.

Image : Une image détaillée view of the 32-pin connector on the Metra 70-2001 harness, showing the pin configuration.
| Couleur du fil | Fonction |
|---|---|
| Jaune | Puissance constante de 12 V |
| Rouge | Alimentation des accessoires 12 V |
| Noir | Sol |
| Orange | Éclairage |
| Bleu | Antenne de puissance / AmpAllumage du lificateur |
| Blanc | Haut-parleur avant gauche (+) |
| Blanc/Noir | Haut-parleur avant gauche (-) |
| Gris | Haut-parleur avant droit (+) |
| Gris/Noir | Haut-parleur avant droit (-) |
| Vert | Haut-parleur arrière gauche (+) |
| Vert/Noir | Haut-parleur arrière gauche (-) |
| Violet | Haut-parleur arrière droit (+) |
| Violet/Noir | Haut-parleur arrière droit (-) |
Opération
Once correctly installed, the Metra 70-2001 Radio Wiring Harness functions as a direct interface between your aftermarket radio and the vehicle's existing electrical system. It provides the necessary power, ground, accessory, and speaker connections, allowing your new radio to operate as intended, delivering audio to the vehicle's speakers and receiving power from the ignition and constant battery sources.
Entretien
The Metra 70-2001 Radio Wiring Harness is a passive electrical component and requires no routine maintenance. It is designed for a long service life once properly installed. Periodically, if you experience audio issues, you may check the harness connections to ensure they remain secure and free from corrosion or damage.
Dépannage
- Radio hors service :
- Vérifiez la boîte à fusibles du véhicule pour repérer tout fusible grillé lié à la radio ou à l'alimentation des accessoires.
- Ensure the yellow (constant power) and red (accessory power) wires are correctly connected and receiving voltage.
- Verify the black (ground) wire has a solid connection to chassis ground.
- Aucun son ne sort des haut-parleurs :
- Confirm all speaker wires (white, gray, green, purple and their black-striped counterparts) are correctly matched and connected between the radio and the harness.
- Check the radio's fader and balance settings.
- Ensure the radio's amplifier turn-on wire (if applicable, usually blue) is connected.
- Problèmes intermittents :
- Recheck all wire connections for looseness or poor contact. Ensure all crimps or solder joints are solid.
- Inspect the harness for any pinched or damaged wires.
Caractéristiques
- Marque: Métra
- Modèle: 70-2001
- Type de connecteur : IDC (32-pin GM connector)
- Matériel: ABS, plastique
- Composants inclus : 1994–2005 GM 32-Pin into Car Harness
- Type de câble : Power & Speaker
- Dimensions de l'article (L xlxh): Environ 8 x 0.12 x 0.5 pouces
- Poids de l'article : Environ 22.68 grammes
Garantie et assistance
Garantie: This product comes with a 1-Year Limited Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, accident, abuse, or unauthorized modifications.
Assistance clientèle : For technical assistance, troubleshooting, or warranty claims, please contact Metra Electronics customer service directly. You can find contact information and additional resources on the official Metra website.
Officiel Website: metroonline.com
