Metra WM-GM1 Stereo Wiring Harness for GM/General Motors 1994-2006
Metra WM-GM1 Stereo Wiring Harness for GM/General Motors 1994-2006
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Condition: New other (see details)
The Metra Stereo Wiring Harness WM-GM1 is a direct-fit wiring adapter engineered for General Motors vehicles produced between 1994 and 2006. It creates a plug-and-play connection between an aftermarket stereo and your vehicle's factory wiring harness, allowing the new radio to tap into existing power, ground, and speaker circuits without altering the car's original electrical system.
Installing a new head unit often means dealing with mismatched wire colors and connectors, which can lead to hours of guesswork or a damaged dashboard harness. This GM wiring harness solves that problem by matching factory connector pinouts, so you simply plug it in rather than cutting or splicing wires. That means a faster installation, a cleaner finished look behind the dash, and the ability to reinstall the factory radio later if needed since the original harness stays intact. It's a practical solution for anyone replacing a factory GM radio with an aftermarket CD player, receiver, or multimedia stereo.
This wiring harness is best suited for GM vehicle owners performing a DIY car stereo upgrade or installers who need a reliable, factory-matched connection for late-model GM applications. For anyone searching for a GM stereo wiring harness, aftermarket radio installation harness, or WM-GM1 adapter, this component offers a straightforward way to complete a car audio upgrade correctly the first time.
📦 Shipping Information
United States Orders: Shipped via Canada Post. Estimated delivery: 4–7 business days (may take up to 10 business days if border delays occur).
Canadian Orders:Orders are shipped via Chit Chats. Estimated delivery is typically 2–6 business days, depending on destination and carrier processing times.
International Orders:Shipped with Chit Chats or Canada Post, depending on service availability. Estimated delivery: 7–15 business days (varies by destination).
Returns & Refunds Policy: We offer a 30-day return window. Items must be gently used, in their original packaging and not have major signs of use/damage
Customs Duties & Import Fees: Orders shipped outside Canada may be subject to import duties, taxes, or customs fees. For U.S. orders, all duties are pre-paid and included—no extra charges at delivery.
Disclaimer: At DaveyDooDeals, our products are sourced from trusted channels, including surplus warehouses, authorized distributors, and carefully selected clearance inventories. While many items are new and unused, some are reclaimed from decommissioned equipment or overstock. Each listing clearly states the item’s condition and any known defects. In the unlikely event that a defect is missed, our 30-day return policy has you covered.
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