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Metra 71-1858

Reverse Wiring Harness for Select 1988-1994 GM Vehicles

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• Wiring Harness For Select 1988-Up GM Vehicles With 21-Pin OEM Radio
• 21 Pin Plugs Into OEM Radio
• Power/4 Speaker
• Harness Designed To Plug In Factory Radio

See compatible vehicles Learn more about the met-711858
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List price $25.99
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Description


Metra brand icon

Authorized dealer

Product Features:

  • Reverse Wiring Harness for Select 1988-2004 GM Vehicles
  • 21-pin plugs into OEM Radio
  • Power/4 Speaker
  • Harness is designed to plug in the factory radio
  • Can be used to repair a harness where the plugs have been cut off or damaged
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Connections:

  • Yellow – 12V Constant
  • Red – 12V Accessory
  • Black - Ground
  • Orange – Dash Light Dimmer/Illumination
  • Green – Left Rear Speaker (+)
  • Green with Black Stripe Left Rear Speaker (-)
  • White – Left Front Speaker (+)
  • White with Black Stripe – Left Front Speaker (-)
  • Purple – Right Rear Speaker (+)
  • Purple with Black Stripe – Right Rear Speaker (-)
  • Gray – Right Front Speaker (+)
  • Gray with Black Stripe – Right Front Speaker (-)

Equivalent to: Scosche GMO2B & American International GWH-343

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 2021 Porsche Macan is not compatible. Change vehicle or See list of compatible similar products


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Item Details


Manufacturer:

Model Number:

71-1858

Weight:

0.25lbs

Internal SKU:

met-711858

Internal Product ID:

12637

Customer Ratings & Reviews


Metra 71-1858 thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Great Product, Made Radio Install Much Easier!

This harness is a top product,and had an unbeatable price!
Thanks

By Vin on November 21, 2014

40 found this helpful


wire

All the wire are labeled very useful; customers service are understanding, knowledgeable.

By richard on July 11, 2016

25 found this helpful



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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.