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Scosche GM03B Wiring Harness

Install a new car stereo in select 1994-2005 vehicles from Buick, Oldsmobile, Cadillac

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• Direct Connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

See compatible vehicles Learn more about the gm03b
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List price $8.95
Thanks , You Pay:
-22%

$6.95

 with warranty
4 payments of $2

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We confirm fitment and offer accessories for speakers. Please set your vehicle first if you would like to purchase more than one gm03b.

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Description


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Authorized dealer

Product Features:

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 (-)
  • Blue - Power Antenna
  • Blue with White Stripe - Remote Turn-on

Compatible Vehicles


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


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Specifications & Details


Harness Features
Main Harness Function
Connect/Install an Aftermarket Car Stereo
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

GM03B

Weight:

0.50lbs

Internal SKU:

gm03b

Internal Product ID:

4503

Customer Ratings & Reviews


Scosche GM03B Wiring Harness thumbnail image

5 star
94%
4 star
3%
3 star
0%
2 star
0%
1 star
3%



Durability
4.8
Value
4.9
Features
4.7
Design
4.9
Usability
4.9

Customer Reviews

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Factory connection made easy

This adaptor worked perfect and made the install go easy.

By Corey on September 1, 2011

57 found this helpful


Great, no problems

It worked exactly like you said it would. What more can a customer ask.

By Larry on October 30, 2011

56 found this helpful


2000 Alero Kit

Perfect just snapped right on.

By Fernando on October 22, 2010

56 found this helpful


good product

Good quality
Easy to use
I would recommend this product

By Mark on September 7, 2013

54 found this helpful


Scosche GM03B / GM03

Connector worked well and was easy to install.

By Richard on September 21, 2009

53 found this helpful


Wrong harness for car.

Don't get this harness if you own a caddy. Sadly the harness that is needed will cost you $85.

By Nicholas on April 18, 2010

50 found this helpful


Great product and very easy to install and very easy to use

Great product and very easy to install and very easy to use.

By mindy on August 10, 2012

49 found this helpful


need it

I installed a stereo in my friends car and it was difficult trying to stuff all of this behind the radio in his 98 Buick lesabre. There are no better options though so you still have to get it. The radio did fit but we had to hold it back against all of the wires and the connector to get the bolts in. I even tried zip tying all of the wires together and putting them up out of the way. The factory cage that holds the original stereo is just very small in that car. +the stereo required an antenna adapter and the stereo had a lot of options requiring about 25 wires

By andrew on February 23, 2011

49 found this helpful


Excellent product!

Product was delivered on time and in great condition. It made installation very easy.

By robert on December 18, 2009

48 found this helpful


great connections

This product what a perfect fit to put in an after market system in my 99 Buick Century.

By Lamarcus on April 22, 2013

46 found this helpful



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Related Searches


Save up to 10 different vehicles in your garage

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Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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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.