Metra 70-1858 Radio Wiring Harness For GM 88-05 Harness
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Metra 70-1858 Radio Wiring Harness For GM 88-05 Harness

4.6/5
Product ID: 3554075
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Details

  • Brand
    Metra
  • Material
    computer
  • Item dimensions L x W x H
    4 x 0.5 x 3
  • Item Weight
    0.03 Pounds
  • Cable Type
    custom
Power/4 speaker wiring support
📏Compact 4 x 0.5 x 3 inch design
🔌21-pin plug for seamless connection

Description

🔧 Upgrade your GM’s sound system with zero hassle—because your ride deserves the best!

  • SPACE SMART DESIGN - Compact dimensions (4 x 0.5 x 3 inches) fit neatly behind your dash without clutter.
  • PRECISION ENGINEERING - Custom cable with 0.92mm wire diameter for reliable, high-quality signal transmission.
  • PLUG PLAY SIMPLICITY - Effortlessly connects aftermarket radios to your GM’s factory wiring—no splicing needed.
  • UNIVERSAL GM COMPATIBILITY - Fits 1988-2005 GM models, ensuring broad vehicle coverage for your upgrade.
  • INSTALLERS TRUSTED CHOICE - Backed by Metra’s 60+ years of innovation and installer-focused expertise.

The Metra 70-1858 Radio Wiring Harness is a precision-engineered adapter designed to connect aftermarket receivers to factory plugs on 1988-2005 GM vehicles. Featuring a 21-pin plug and support for power and 4-speaker wiring, this compact harness ensures a clean, reliable installation without cutting factory wires. Trusted by professional installers for over 60 years, Metra delivers a seamless upgrade experience for your car’s audio system.

Specifications

BrandMetra
Materialcomputer
Item dimensions L x W x H4 x 0.5 x 3 inches
Item Weight0.03 Pounds
Cable Typecustom
Connector TypeOther
Wire Diameter0.92 Millimeters
ManufacturerMETRA Ltd
UPC086429002573
Global Trade Identification Number00086429002573
Item Weight0.48 ounces
Product Dimensions4 x 0.5 x 3 inches
Item model number70-1858
Is Discontinued By ManufacturerNo
WarrantyPlease contact the manufacturer
Weight0.1 Pounds

Reviews

4.6

All from verified purchases

M**I

Makes Stereo Install EASY

This made the installation easy in my Camaro. The harness does its job by making the car's wiring work with the up to date stereo head unit. Quality feels good in the hand, time will tell about durability. In my experience, these go in and are forgotten about because they just work and stay working. Good for the price!

T**N

Standard

Easy installation. Worked properly with no problems or defects.

G**.

Perfect fit for my 2002 Silverado.

This plug fit as promised, and makes wiring an aftermarket radio much simpler. I would recommend this to anyone who is going to upgrade their stereo. A must have part.

S**E

Excellent product

Perfect product all wires matched high quality parts easily installed pre spliced wires ready to go excellent all around highly recommended for automotive audio needs

F**2

Works in 93' Chevy Lumina

This worked well for my 93' Chevy Lumina Euro edition. However, one of the 4 plugs that was supposed to connect into this did not fit. The plastic tabs meant to guide it simply didn't line up right. That mystery plug had two wires running to it that I do not know the function of. However the other end of this plug, where you are meant to wire the radio to, had no wires coming from this mystery plug. So if it had fit into the hole, it still wouldn't be connecting to anything.So I wired the existing cables coming from this harness to my new radio deck, and all the wires match up perfectly with nothing left to run to this mystery plug (I had figured if I had extra wires at the end I'd discern what this mystery plug was for). Turned on the car, radio works perfectly with this mystery plug left disconnected.So I wrapped it in electrical tape and simply stuck it into the back of the radio cavity with the rest of the wires. Harness worked perfectly for function, just one strange plug in my car is now disconnected but it's impacting anything at all.

K**T

Good

Good

D**R

Works on Third Gen Firebird

Works on third gen Firebird!

D**S

Almost perfect

I drive a 96 beretta and this was almost a perfect fit but i had to cut and file down the fins a fraction of an inch to get it to fit even a little bit but so far after months of driving and typical radio use nothing has shorted out and its worked great so not bad

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Metra 70 1858 Radio Wiring Harness For Gm 88 05 | Desertcart GB