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Metra

Metra 70-1858 Radio Replacement Wiring Harness GM 1988-2005 21-Pin

Metra 70-1858 Radio Replacement Wiring Harness GM 1988-2005 21-Pin

Regular price $14.99 USD
Regular price Sale price $14.99 USD
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***This item requires 1-3 days require additional handling time***

The Metra 70-1858 Radio Replacement Wiring Harness simplifies installing an aftermarket radio in select General Motors vehicles (1988-2005) by plugging directly into the factory radio connector. This harness eliminates cutting into the factory wiring harness and provides color-coded leads for clean connection to your new aftermarket head unit.

Key Features

  • Vehicle-specific radio wiring harness for select GM applications
  • Direct plug-in to the factory radio harness — no cutting required
  • Color-coded leads match standard aftermarket radio wiring
  • Provides power, ground, and four-speaker connections
  • 21-pin connector for GM factory radio systems

Wiring Notes

  • Designed for non-amplified factory audio systems
  • May require a dash kit or antenna adapter for complete install

Vehicle Compatibility

General Motors Buick Century 1988-1996
Buick Electra 1988-1990
Buick LeSabre 1988-1994
Buick Park Avenue 1991-1994
Buick Riviera 1986-1995
Buick Roadmaster 1991-1994
Buick Skyhawk 1988-1989
Buick Skylark 1987-1995
Cadillac 60 Special 1993
Cadillac DeVille 1988-1995
Cadillac Eldorado 1988-1991
Cadillac Escalade 1999-2002
Cadillac Escalade EXT 2002
Cadillac Seville 1988-1991
Chevrolet Astro 1991-2005
Chevrolet Avalanche 2002
Chevrolet Beretta 1988-1996
Chevrolet Blazer 1995-2002
Chevrolet C1500 1995-1999
Chevrolet C1500 Suburban 1995-1999
Chevrolet C2500 Suburban 1995-1999
Chevrolet Camaro 1990-2002
Chevrolet Caprice 1991-1996
Chevrolet Express 1996-2000
Chevrolet G10 1988-1995
Chevrolet G20 1988-1995
Chevrolet G30 1988-1996
Chevrolet K1500 1995-1999
Chevrolet K1500 Suburban 1995-1999
Chevrolet K2500 Suburban 1995-1999
Chevrolet S10 1994-2002
Chevrolet S10 Blazer 1990-1994
Chevrolet Silverado 1500 1999-2002
Chevrolet Silverado 1500 HD 2001-2002
Chevrolet Silverado 2500 1999-2002
Chevrolet Silverado 2500 HD 2001-2002
Chevrolet Silverado 3500 2001-2002

Installation Notes

Always confirm the factory audio and connector configuration before installation. Additional dash kit or antenna adapter may be needed to complete a stereo installation.

What’s in the Box

  • Metra 70-1858 radio replacement wiring harness

Why Buy From MCOR Automotive

  • Authorized Metra dealer — genuine components
  • Fitment and install guidance available
  • 22+ years of automotive electronics experience
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