Metra Aftermarket Radio Wire Harness WM-GM1 - Fits General Motors 1988-2005 - Multi Color
Metra Aftermarket Radio Wire Harness WM-GM1 - Fits General Motors 1988-2005 - Multi Color
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Metra Aftermarket Radio Wire Harness WM-GM1 - Fits General Motors 1988-2005 - Multi Color

|21 ratings
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Key item features

  • Broad Compatibility: Specifically designed for select General Motors models manufactured between 1988 and 2005, including compatible Chevy models, ensuring a precise fit for a range of vehicles.
  • Aftermarket Integration: Facilitates the connection of an aftermarket car stereo to the vehicle’s existing OEM factory wiring, acting as a crucial adapter since new radios do not directly plug into original connectors.
  • Effortless Installation: Features a plug-and-play design that allows for stereo replacement without the need to cut or modify the original vehicle wiring, preserving the integrity of the factory electrical system.
  • Organized Wiring: This multi-color harness transfers essential power and ground through the OEM radio harness, and its longer leads enable more convenient routing behind the dash for an organized setup.
  • Stable Connection: Constructed with OEM-grade cables and factory-style connectors, it creates a stable and secure connection for car stereo installation, simplifying the process for both DIY users and professional installers.
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4.2 out of 5 stars
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21 ratings14 reviews
How item rating is calculated
  1. 5 stars62% (13)
  2. 4 stars19% (4)
  3. 3 stars10% (2)
  4. 2 stars0% (0)
  5. 1 star10% (2)
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Showing 1-3 of 14 reviews

Aug 25, 2026
Reviewer name: Jayy
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Plug and play perfection

This Metra wire harness made installing the new stereo so much easier. The wires are color-coded clearly and match up standard aftermarket color schemes right out of the box. Connectors snap tightly into the factory plug without any modification required.Clean connections, solid build quality, and made wiring up the aftermarket head unit totally painless. Highly recommend if you want to avoid splicing factory wiring.

Incentivized Review
Helpful?6EFHMILV3NFL108627807
Aug 28, 2026
Reviewer name: Marc
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Buick wire harness for stereo

Perfect fit for the ol 1999 Buick century custom. You do not need both harnesses but guessing on year and make you get an extra one

Incentivized Review
Helpful?6EFHMILV3NFL108627807
Jul 6, 2026
Reviewer name: anonymous
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

just what i needed

is just as described worked well

Incentivized Review
Helpful?6EFHMILV3NFL108627807
Current price is $13.36
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