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Crux Car Audio & Electronics

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Stereo wiring harnesses and interfaces ✕
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Product Type
Stereo wiring harnesses and interfaces,
Price Range
Main Harness Function
Different installations on different vehicles require different harnesses. This type is what the harness is considered. Each wiring harness we sell serves a purpose such as installing an aftermarket car stereo, integrating an aftermarket amplifier with your factory car stereo, connecting Bluetooth to your factory car stereo, and more.
Additional Harness Features
The various features that the wiring harness provides to your car stereo and/or audio system.
On-Star Compatible
This means that the harness is compatible with vehicles that have On-Star built-in.
CAN-BUS Compatible
CANBUS Ballasts ensure compatibility with ALL vehicle makes and models without the need for additional accessories. In addition, they have built-in Anti-Flickering Capacitors to help prevent lighting issues caused by voltage spikes and drops by stabilizing the power.
Compatible Premium Audio Systems
Some vehicles have higher end audio systems installed in them by the manufacturer. This specifies which premium audio systems this item is compatible with.
Vehicle Sound System
This refers to what kind of sound system the vehicle has. Premium audio systems are generally name brand systems (such as JBL, Bose, Rockford Fosgate, etc) that have been installed inside a vehicle when it leaves the factory. Often they more advanced systems, complex wiring, factory amplifiers, and other features that can make installing aftermarket component difficult.
Availability
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Crux SWRMB-57M

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2004-2008 E-Class and SLK-Class and CLS-Class

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Crux SWRMB-57M

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2004-2008 E-Class and SLK-Class and CLS-Class

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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VIP Product Get $14.31 in rewards to spend later

List price $222.60
-36% $143.10

In stock.

Add to Cart

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

Crux DKFD-27

Stereo Replacement Interface with Dash Kit for select 2004-2012 vehicles from Ford, Mercury, Lincoln

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Crux DKFD-27

Stereo Replacement Interface with Dash Kit for select 2004-2012 vehicles from Ford, Mercury, Lincoln

• Radio Replacement Interface with Dash Kit for select 2004-2012 vehicles from Ford, Mercury, Lincoln
• Includes a single DIN and double DIN dash kit
• Retains factory features while functioning with an aftermarket radio
• Retains factory-installed auxiliary input and subwoofer
• Retains accessory power
• Compatible with select 2004-2012 vehicles from Ford, Mercury, Lincoln Vehicles

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $136.50
-36% $87.75

In stock.

Add to Cart

• Radio Replacement Interface with Dash Kit for select 2004-2012 vehicles from Ford, Mercury, Lincoln
• Includes a single DIN and double DIN dash kit
• Retains factory features while functioning with an aftermarket radio
• Retains factory-installed auxiliary input and subwoofer
• Retains accessory power
• Compatible with select 2004-2012 vehicles from Ford, Mercury, Lincoln Vehicles

Crux SOOGM-19N Wiring Interface

Install new car stereo and retain steering wheel audio controls and other factory features in select 2010-2017 vehicles from Chevrolet, GMC, Buick

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Crux SOOGM-19N Wiring Interface

Install new car stereo and retain steering wheel audio controls and other factory features in select 2010-2017 vehicles from Chevrolet, GMC, Buick

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Retains OnStar functionality
• Retains factory safety warning Chimes
• Micro-B USB Updatable

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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VIP Product Get $14.72 in rewards to spend later

List price $228.90
-36% $147.15

In stock.

Add to Cart

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Retains OnStar functionality
• Retains factory safety warning Chimes
• Micro-B USB Updatable

Crux SWRGM-49S

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2019-2024 vehicles from Chevrolet, GMC, Cadillac

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Crux SWRGM-49S

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2019-2024 vehicles from Chevrolet, GMC, Cadillac

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $14.18 in rewards to spend later

List price $220.50
-36% $141.75

In stock.

Add to Cart

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

Crux SWRGM-49R

Install a New Car Stereo and Retain Steering Wheel Controls, Backup Camera and Other Factory Features in select 2019-2023 vehicles from Chevrolet, GMC

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Crux SWRGM-49R

Install a New Car Stereo and Retain Steering Wheel Controls, Backup Camera and Other Factory Features in select 2019-2023 vehicles from Chevrolet, GMC

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $14.18 in rewards to spend later

List price $220.50
-36% $141.75

In stock

Only 2 Left!

Add to Cart

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

Crux SWRGM-47

Install a New Car Stereo and Retain OnStar, Steering Wheel Controls and Other Factory Features in select 2016-2019 vehicles from Chevrolet, GMC

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Crux SWRGM-47

Install a New Car Stereo and Retain OnStar, Steering Wheel Controls and Other Factory Features in select 2016-2019 vehicles from Chevrolet, GMC

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $12.02 in rewards to spend later

List price $186.90
-36% $120.15

In stock.

Add to Cart

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

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    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
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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.

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