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Factory OEM Amplifier Bypass Harnesses for your 1976 Custom 500 close

Bypass the factory OEM amplifier when replacing your factory radio or amplifier with an aftermarket radio or amp. We offer a full selection of amplifier bypass harnesses from Axxess/Metra and more.

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Metra 70-6514

Amplifier Bypass Harness for select 2004-2009 vehicles from Dodge, Chrysler

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Amplifier Bypass Harness for select 2004-2009 vehicles from Dodge, Chrysler

• Factory Amplifier Bypass Harness For 2005-2007 Chrysler, Dodge and Jeep Vehicles
• Bypass Factory Amplifier
• Premium Sound System
• Allows Installation Of Aftermarket Radio Using Existing Factory Wiring

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No Fit Icon Doesn't fit your Custom 500

3
List price $73.99
-11% $65.99

In stock

• Factory Amplifier Bypass Harness For 2005-2007 Chrysler, Dodge and Jeep Vehicles
• Bypass Factory Amplifier
• Premium Sound System
• Allows Installation Of Aftermarket Radio Using Existing Factory Wiring

Axxess AXABH-TY4

Amplifier Bypass Harness for select 2005-2018 vehicles from Toyota

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Amplifier Bypass Harness for select 2005-2018 vehicles from Toyota

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

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No Fit Icon Doesn't fit your Custom 500

List price $33.99
-12% $29.99

In stock

Only 3 Left!

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

Metra 70-2057

Amplifier Bypass Harness for select 2014-2017 Silverado 1500 / 3500 HD / 2500 HD and Sierra 2500 HD / 3500 HD / 1500 with M.O.S.T Amplifier

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Amplifier Bypass Harness for select 2014-2017 Silverado 1500 / 3500 HD / 2500 HD and Sierra 2500 HD / 3500 HD / 1500 with M.O.S.T Amplifier

• Amplifier bypass harness for select 2014-2017 Silverado 1500 / 3500 HD / 2500 HD and Sierra 2500 HD / 3500 HD / 1500
• Designed for vehicles with M.O.S.T amplifier system
• 6 ft. amplifier bypass harness with 21-pin plug
• Color coded wires with printed labels for easy installation

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No Fit Icon Doesn't fit your Custom 500

List price $44.99
-49% $22.99

In stock

• Amplifier bypass harness for select 2014-2017 Silverado 1500 / 3500 HD / 2500 HD and Sierra 2500 HD / 3500 HD / 1500
• Designed for vehicles with M.O.S.T amplifier system
• 6 ft. amplifier bypass harness with 21-pin plug
• Color coded wires with printed labels for easy installation

Metra 70-1726

Amp Bypass Wiring Harness for select 2003-2011 Element

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Amp Bypass Wiring Harness for select 2003-2011 Element

• Wiring Harness For 2003 Honda Element Vehicles
• Factory Amplifier Bypass Harness Includes 17ft. of 16 Gauge Wire
• Plugs In At Factory Amplifier And Ran To Aftermarket Radio or Amplifier

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No Fit Icon Doesn't fit your Custom 500

List price $71.99
-42% $41.99

In stock

Only 3 Left!

• Wiring Harness For 2003 Honda Element Vehicles
• Factory Amplifier Bypass Harness Includes 17ft. of 16 Gauge Wire
• Plugs In At Factory Amplifier And Ran To Aftermarket Radio or Amplifier

Metra 70-6510

Amp Bypass Wiring Harness for select 2004-2005 Ram 1500 / 2500 / 3500 with Infinity System

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Amp Bypass Wiring Harness for select 2004-2005 Ram 1500 / 2500 / 3500 with Infinity System

• Wiring Harness For 2004-2005 Dodge Ram With Infinity System
• For Models Without The Hands-Free Capable Option
• 204" Long Amplifier Bypass Harness
• One 22-Pin Power Plug, 18-Pin Amplifier Plug

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No Fit Icon Doesn't fit your Custom 500

2
List price $85.99
-36% $54.99

In stock

• Wiring Harness For 2004-2005 Dodge Ram With Infinity System
• For Models Without The Hands-Free Capable Option
• 204" Long Amplifier Bypass Harness
• One 22-Pin Power Plug, 18-Pin Amplifier Plug

Metra 71-1765

Install New Car Stereo and Retain for select 2017-2023 vehicles from Toyota

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Install New Car Stereo and Retain for select 2017-2023 vehicles from Toyota

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

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No Fit Icon Doesn't fit your Custom 500

List price $62.99
-41% $36.99

In stock

Only 2 Left!

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

Metra 70-1727

Factory Amplifier Bypass Harness for select 2006-2011 Civic and Civic Hybrid

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Factory Amplifier Bypass Harness for select 2006-2011 Civic and Civic Hybrid

• Factory Amplifier Bypass Harness for 2006-2009 Honda Civic Vehicles
• Bypass Factory Amplifier
• Premium Sound System
• Allows For Installation Of Aftermarket Radio Using Existing Factory Wiring

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No Fit Icon Doesn't fit your Custom 500

3
List price $71.99
-11% $63.99

In stock

Only 3 Left!

• Factory Amplifier Bypass Harness for 2006-2009 Honda Civic Vehicles
• Bypass Factory Amplifier
• Premium Sound System
• Allows For Installation Of Aftermarket Radio Using Existing Factory Wiring

Metra 70-5526

Amplifier Bypass Harness for select 2004-2006 Navigator

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Amplifier Bypass Harness for select 2004-2006 Navigator

• Factory Amplifier Bypass Kit for select 2004-2006 Navigator
• Designed specifically for car audio systems with THX
• 12" amplifier integration harness included
• Plugs into the car's factory radio connectors

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No Fit Icon Doesn't fit your Custom 500

$40.99

Available

Ships in 10-14 days

• Factory Amplifier Bypass Kit for select 2004-2006 Navigator
• Designed specifically for car audio systems with THX
• 12" amplifier integration harness included
• Plugs into the car's factory radio connectors

Axxess AXABH-HN1

Amplifier Bypass Harness for select 2018-2022 Accord Hybrid and Insight

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Amplifier Bypass Harness for select 2018-2022 Accord Hybrid and Insight

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

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No Fit Icon Doesn't fit your Custom 500

List price $33.99
-12% $29.99

In stock

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

Metra 70-8121

Factory Amplifier Bypass Harness for select 2005-2006 Tundra

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Factory Amplifier Bypass Harness for select 2005-2006 Tundra

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

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No Fit Icon Doesn't fit your Custom 500

List price $24.99
-48% $12.99

In stock

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

Axxess AXABH-LX3

Amplifier Bypass Harness for select 2010-2015 vehicles from Lexus

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Amplifier Bypass Harness for select 2010-2015 vehicles from Lexus

• 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.

No Fit Icon Doesn't fit your Custom 500

List price $33.99
-12% $29.99

In stock

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

Metra 70-8117

Power and Amplifier Bypass Harness for select 2003-2010 vehicles from Toyota

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Power and Amplifier Bypass Harness for select 2003-2010 vehicles from Toyota

• Amplifier bypass harness for select 2003-2010 vehicles from Toyota
• 17 ft. amplifier bypass harness with 8" power harness
• Color coded wires with printed labels for easy installation

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No Fit Icon Doesn't fit your Custom 500

List price $89.99
-49% $45.99

Available

Ships in 10-14 days

• Amplifier bypass harness for select 2003-2010 vehicles from Toyota
• 17 ft. amplifier bypass harness with 8" power harness
• Color coded wires with printed labels for easy installation

Metra 70-5605

Amplifier Bypass Harness for select 1990-2004 vehicles from Ford, Mercury, Lincoln

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Amplifier Bypass Harness for select 1990-2004 vehicles from Ford, Mercury, Lincoln

• Amplifier bypass harness for select 1990-2004 vehicles from Ford, Mercury, Lincoln
• Includes 5 ft. / 60" harness with 8-pin plug
• Also includes 17 ft. 16-gauge harness with 20-pin plug
• Color coded wires with printed labels for easy installation

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No Fit Icon Doesn't fit your Custom 500

1
List price $36.99
-46% $19.99

In stock

Only 3 Left!

• Amplifier bypass harness for select 1990-2004 vehicles from Ford, Mercury, Lincoln
• Includes 5 ft. / 60" harness with 8-pin plug
• Also includes 17 ft. 16-gauge harness with 20-pin plug
• Color coded wires with printed labels for easy installation

Axxess AXABH-CH4

Amplifier Bypass Harness for select 2015-2025 vehicles from Jeep, Dodge, Chrysler

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Amplifier Bypass Harness for select 2015-2025 vehicles from Jeep, Dodge, Chrysler

• Vehicle-specific harness to bypass the factory amplifier
• Compatible with select 2015-2025 vehicles from Jeep, Dodge, Chrysler
• Wiring gauge size: 20 gauge wires
• Wiring length: 12-inch

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

No Fit Icon Doesn't fit your Custom 500

List price $33.99
-12% $29.99

In stock

• Vehicle-specific harness to bypass the factory amplifier
• Compatible with select 2015-2025 vehicles from Jeep, Dodge, Chrysler
• Wiring gauge size: 20 gauge wires
• Wiring length: 12-inch

Metra 70-6505

Amplifier Bypass Harness for select 1997-2004 Dakota and Cherokee

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Amplifier Bypass Harness for select 1997-2004 Dakota and Cherokee

• Amplifier bypass harness for select 1997-2004 Dakota and Cherokee
• Includes 17 ft. amplifier bypass harness with 14-pin connector
• Color coded wires with printed labels for easy installation

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No Fit Icon Doesn't fit your Custom 500

List price $54.99
-42% $31.99

In stock

Only 3 Left!

• Amplifier bypass harness for select 1997-2004 Dakota and Cherokee
• Includes 17 ft. amplifier bypass harness with 14-pin connector
• Color coded wires with printed labels for easy installation

Axxess AXABH-CH3

Amplifier Bypass Harness for select 2014-2019 vehicles from Jeep, Dodge, Fiat

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Amplifier Bypass Harness for select 2014-2019 vehicles from Jeep, Dodge, Fiat

• Vehicle-specific harness to bypass the factory amplifier
• Compatible with select 2014-2019 vehicles from Jeep, Dodge, Fiat
• Wiring gauge size: 20 gauge wires
• Wiring length: 12-inch

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

No Fit Icon Doesn't fit your Custom 500

List price $33.99
-12% $29.99

In stock

• Vehicle-specific harness to bypass the factory amplifier
• Compatible with select 2014-2019 vehicles from Jeep, Dodge, Fiat
• Wiring gauge size: 20 gauge wires
• Wiring length: 12-inch

Axxess AXABH-TY3

Amplifier Bypass Harness for select 2005-2006 Tundra

AXABH-TY3 big
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Amplifier Bypass Harness for select 2005-2006 Tundra

• 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.

No Fit Icon Doesn't fit your Custom 500

List price $33.99
-12% $29.99

In stock

Only 2 Left!

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

Metra 70-1120

Power and Amplifier Bypass Harness for select 1987-1995 vehicles from Volvo

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Power and Amplifier Bypass Harness for select 1987-1995 vehicles from Volvo

• Amplifier bypass harness for select 1987-1995 vehicles from Volvo
• Plugs into car harness at stereo
• Easily powers 4 speakers
• Includes 5" power harness and 60" amplifier harness
• Color coded wires with printed labels for easy installation

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No Fit Icon Doesn't fit your Custom 500

2
List price $33.99
-41% $19.99

In stock

Only 2 Left!

• Amplifier bypass harness for select 1987-1995 vehicles from Volvo
• Plugs into car harness at stereo
• Easily powers 4 speakers
• Includes 5" power harness and 60" amplifier harness
• Color coded wires with printed labels for easy installation

Metra 70-6506

Amplifier Bypass Harness for 2004-2008 Chrysler Pacifica

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Amplifier Bypass Harness for 2004-2008 Chrysler Pacifica

• Amplifier Bypass Harness for 2003-2006 Chrysler Pacifica
• 204" Long amplifier bypass harness
• Include power wires only, no speaker wires

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No Fit Icon Doesn't fit your Custom 500

List price $72.99
-59% $29.99

Available

Ships in 10-14 days

• Amplifier Bypass Harness for 2003-2006 Chrysler Pacifica
• 204" Long amplifier bypass harness
• Include power wires only, no speaker wires

Metra 70-6513

Amplifier Bypass Harness for 1994-1996 Jeep Grand Cherokee

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Amplifier Bypass Harness for 1994-1996 Jeep Grand Cherokee

• Amplifier Bypass Harness
• For 1994-1996 Jeep Grand Cherokee
• Harness can be plugged in at the factory amplifier and ran to the location of the aftermarket radio/amplifier

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No Fit Icon Doesn't fit your Custom 500

List price $47.99
-42% $27.99

In stock

Only 1 Left!

• Amplifier Bypass Harness
• For 1994-1996 Jeep Grand Cherokee
• Harness can be plugged in at the factory amplifier and ran to the location of the aftermarket radio/amplifier

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    FAQ Frequently asked questions in Factory OEM Amplifier Bypass Harnesses


    Factory Amp Bypass Harness Frequently Asked Questions (FAQ)
    A factory amp bypass harness is an essential component when upgrading the audio system in a vehicle equipped with a factory amplifier. It allows you to retain the factory head unit while bypassing the built-in amplifier, making it possible to install aftermarket amplifiers and speakers. By using a bypass harness, you can achieve better sound quality, more power, and greater customization options without replacing the entire head unit. This is particularly beneficial in vehicles with complex audio systems integrated with other vehicle functions, such as navigation and climate control, as it ensures a seamless upgrade without compromising on functionality.
    The installation of a factory amp bypass harness can vary depending on the vehicle's make and model, as well as the complexity of the audio system. While some experienced car audio enthusiasts may be comfortable with the installation process, it is generally recommended to seek professional assistance for a seamless and reliable installation. Professional installers have the expertise and tools to handle various vehicle-specific challenges and ensure all connections are secure and proper. Attempting a DIY installation without the necessary knowledge and experience may lead to issues like noise interference, improper connections, or even damage to the vehicle's electrical system. It's best to consult a qualified car audio installer to ensure a successful bypass harness installation.
    Generally, using a factory amp bypass harness to upgrade your car audio system should not void the vehicle's warranty. The Magnuson-Moss Warranty Act protects consumers from having their warranty voided simply because they installed aftermarket parts or accessories. However, it's essential to understand that if any damage is directly caused by the installation of the bypass harness or any aftermarket components, it may not be covered under the vehicle's warranty. To mitigate any potential warranty concerns, it is advisable to retain the original factory parts and consult with the vehicle manufacturer or dealership before making any modifications. Additionally, choosing reputable brands and professional installation can minimize any warranty-related issues.
    Yes, a factory amp bypass harness can significantly improve your audio system's performance. Factory amplifiers are often limited in power and performance, and they may not provide the necessary output for aftermarket speakers or subwoofers. By bypassing the factory amp and installing aftermarket amplifiers, you can enjoy more power, cleaner sound, and better control over the audio signal. Aftermarket amps are designed to deliver higher-quality audio, reducing distortion and allowing you to achieve the desired audio balance. Upgrading your audio system with a bypass harness and aftermarket amplifiers can transform your in-car audio experience, making it more enjoyable, immersive, and tailored to your preferences.
    When properly installed, a factory amp bypass harness should not adversely affect other vehicle functions or systems. The primary purpose of the bypass harness is to retain the factory head unit while bypassing the built-in amplifier. This means that the bypass harness does not interfere with other vehicle components or functionalities, such as navigation, climate control, or vehicle diagnostics. Additionally, using a reputable and vehicle-specific bypass harness can ensure compatibility and seamless integration with your car's audio system. However, as with any aftermarket modification, it's essential to have the bypass harness installed by a professional to avoid any potential issues. A qualified installer can ensure all connections are secure and properly integrated, minimizing the risk of any impact on other vehicle functions.
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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
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.