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  1. Home
  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Audio Installation & Accessories
  4. Discontinued Car Amplifier Installation & Accessories
  5. Discontinued Factory OEM Amplifier Bypass Harnesses

Discontinued Factory OEM Amplifier Bypass Harnesses for your 2005 A4 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 70-2052

Factory Amplifier Bypass Harness for 2002-2004 Saturn Vue

70-2052 big DISCONTINUED
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Metra 70-2052

Factory Amplifier Bypass Harness for 2002-2004 Saturn Vue

204" Long amplifier bypass harness • High impact, OEM quality, ABS plastic molded connector for the perfect fit • GSXL wire provides more flexibility, power handling and heat resistance • Compatible with the 2002-2004 Saturn Vue

No Fit Icon Doesn't fit your A4

204" Long amplifier bypass harness • High impact, OEM quality, ABS plastic molded connector for the perfect fit • GSXL wire provides more flexibility, power handling and heat resistance • Compatible with the 2002-2004 Saturn Vue

Bazooka FAST-5004

Ford w/ Amp Bypass FAST Harness

No picture DISCONTINUED
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Bazooka FAST-5004

Ford w/ Amp Bypass FAST Harness

Ford w/ Amp Bypass FAST Harness • Install Bazooka Amplified Tubes Easily • No Wire Cutting Required

No Fit Icon Doesn't fit your A4

Ford w/ Amp Bypass FAST Harness • Install Bazooka Amplified Tubes Easily • No Wire Cutting Required

Bazooka FAST-5008

Ford / Mazda w/ Amp Bypass FAST Harness

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Bazooka FAST-5008

Ford / Mazda w/ Amp Bypass FAST Harness

Ford / Mazda w/ Amp Bypass FAST Harness • Install Bazooka Amplified Tubes Easily • No Wire Cutting Required

No Fit Icon Doesn't fit your A4

Ford / Mazda w/ Amp Bypass FAST Harness • Install Bazooka Amplified Tubes Easily • No Wire Cutting Required

Metra 70-5513 Amplifier Bypass Harness

Install a new car stereo in select 1989-1997 vehicles from Ford, Mercury, Mazda

70-5513 big DISCONTINUED
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Metra 70-5513 Amplifier Bypass Harness

Install a new car stereo in select 1989-1997 vehicles from Ford, Mercury, Mazda

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

No Fit Icon Doesn't fit your A4

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

PAC APH-TY03

18" Speaker Connection Harnesses for select 2003-2015 vehicles from Toyota with JBL Amplified Systems

APH-TY03 big DISCONTINUED
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PAC APH-TY03

18" Speaker Connection Harnesses for select 2003-2015 vehicles from Toyota with JBL Amplified Systems

• Compatible with select 2003-2015 vehicles from Toyota with JBL amplified systems
• Connects aftermarket speakers to the factory speaker harness
• Quick and easy installation
• No cutting necessary
• Plugs directly into harness

No Fit Icon Doesn't fit your A4

• Compatible with select 2003-2015 vehicles from Toyota with JBL amplified systems
• Connects aftermarket speakers to the factory speaker harness
• Quick and easy installation
• No cutting necessary
• Plugs directly into harness

PAC FWH55XT

Factory OEM Amplifier Bypass Harness for select 1995-1997 vehicles from Ford, Lincoln, Mercury

FWH55XT big DISCONTINUED
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PAC FWH55XT

Factory OEM Amplifier Bypass Harness for select 1995-1997 vehicles from Ford, Lincoln, Mercury

• OEM amplifier bypass harness for select 1995-1997 vehicles from Ford, Lincoln, Mercury
• Allows installation of aftermarket amplifier
• Polyvinyl Chloride (PVC) cover, copper wire
• No splicing and cutting of wires required

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No Fit Icon Doesn't fit your A4

• OEM amplifier bypass harness for select 1995-1997 vehicles from Ford, Lincoln, Mercury
• Allows installation of aftermarket amplifier
• Polyvinyl Chloride (PVC) cover, copper wire
• No splicing and cutting of wires required

Axxess AX-AB-LX2

Amp Bypass Harness for select 2006-2009 vehicles from Lexus

AX-AB-LX2 big DISCONTINUED
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Axxess AX-AB-LX2

Amp Bypass Harness for select 2006-2009 vehicles from Lexus

• Amp Bypass Harness
• Vehicle-specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

No Fit Icon Doesn't fit your A4

2

• Amp Bypass Harness
• Vehicle-specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

PAC APH-TY04

18" Speaker Connection Harnesses for select 2006-2025 vehicles from Toyota, Lexus with JBL Amplified Systems

APH-TY04 big DISCONTINUED
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PAC APH-TY04

18" Speaker Connection Harnesses for select 2006-2025 vehicles from Toyota, Lexus with JBL Amplified Systems

• Compatible with select 2006-2025 vehicles from Toyota, Lexus with JBL amplified systems
• Connects aftermarket speakers to the factory speaker harness
• Quick and easy installation
• No cutting necessary
• Plugs directly into harness

No Fit Icon Doesn't fit your A4

• Compatible with select 2006-2025 vehicles from Toyota, Lexus with JBL amplified systems
• Connects aftermarket speakers to the factory speaker harness
• Quick and easy installation
• No cutting necessary
• Plugs directly into harness

Axxess AX-AB-LX1

Amp Bypass Harness for select 2012-2025 vehicles from Subaru, Lexus, Toyota

AX-AB-LX1 big DISCONTINUED
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Axxess AX-AB-LX1

Amp Bypass Harness for select 2012-2025 vehicles from Subaru, Lexus, Toyota

• Lexus Amp Bypass Harness 2013-Up
• Vehicle-specific harness to bypass the factory amplifier
• Provides loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire
• Authorized Internet Dealer

No Fit Icon Doesn't fit your A4

1

• Lexus Amp Bypass Harness 2013-Up
• Vehicle-specific harness to bypass the factory amplifier
• Provides loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire
• Authorized Internet Dealer

Axxess AX-AB-CH3

Amp Bypass Harness for

AX-AB-CH3 big DISCONTINUED
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Axxess AX-AB-CH3

Amp Bypass Harness for

• FITS CHRYSLER 2013-2018
• Amp Bypass Harness
• Vehicle-specific harness to bypass the factory amplifier

No Fit Icon Doesn't fit your A4

1

• FITS CHRYSLER 2013-2018
• Amp Bypass Harness
• Vehicle-specific harness to bypass the factory amplifier

Axxess AX-AB-FD1

Amp Bypass Harness for select 2014 F-150 (Sony® amplified)

AX-AB-FD1 big DISCONTINUED
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Axxess AX-AB-FD1

Amp Bypass Harness for select 2014 F-150 (Sony® amplified)

• Ford Amp Bypass Harness 2011-2017 (Sony® amplified)
• Vehicle-specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

No Fit Icon Doesn't fit your A4

• Ford Amp Bypass Harness 2011-2017 (Sony® amplified)
• Vehicle-specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

Axxess AX-AB-TY3

Amplifier Bypass Harness for select 2005-2006 Tundra

AX-AB-TY3 big DISCONTINUED
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Axxess AX-AB-TY3

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

No Fit Icon Doesn't fit your A4

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

Axxess AX-AB-TY4

Amplifier Bypass Harness for select 2005-2018 vehicles from Toyota

AX-AB-TY4 big DISCONTINUED
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Axxess AX-AB-TY4

Amplifier Bypass Harness for select 2005-2018 vehicles from Toyota

• Vehicle specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier

No Fit Icon Doesn't fit your A4

• Vehicle specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier

Axxess AX-AB-CH4

Amp Bypass Harness for select 2015-2021 vehicles from Dodge, Jeep, Ram

AX-AB-CH4 big DISCONTINUED
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Axxess AX-AB-CH4

Amp Bypass Harness for select 2015-2021 vehicles from Dodge, Jeep, Ram

• Chrysler Amp Bypass Harness 2015-Up
• Vehicle-specific harness to bypass the factory amplifier
• Provides loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

No Fit Icon Doesn't fit your A4

• Chrysler Amp Bypass Harness 2015-Up
• Vehicle-specific harness to bypass the factory amplifier
• Provides loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

Axxess AX-AB-GM1

Amp Bypass Harness for select 2014-2025 vehicles from GMC, Chevrolet

AX-AB-GM1 big DISCONTINUED
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Axxess AX-AB-GM1

Amp Bypass Harness for select 2014-2025 vehicles from GMC, Chevrolet

• GM Amp Bypass Harness 2014-Up
• Vehicle-specific harness to bypass the factory amplifier
• Provides loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

No Fit Icon Doesn't fit your A4

• GM Amp Bypass Harness 2014-Up
• Vehicle-specific harness to bypass the factory amplifier
• Provides loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

Axxess AX-AB-LX3

Amp Bypass Harness for select 2010-2013 IS-F and IS350 and IS250

AX-AB-LX3 big DISCONTINUED
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Axxess AX-AB-LX3

Amp Bypass Harness for select 2010-2013 IS-F and IS350 and IS250

• Amp Bypass Harness
• Vehicle-specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

No Fit Icon Doesn't fit your A4

• Amp Bypass Harness
• Vehicle-specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire

Axxess AXDSPX-HN3

DSP Interface With Amp Bypass Harness for select 2016-2025 vehicles from Honda

AXDSPX-HN3 big DISCONTINUED
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Axxess AXDSPX-HN3

DSP Interface With Amp Bypass Harness for select 2016-2025 vehicles from Honda

• 31 Band Graphic EQ
• Bas Knob Included
• Independent High, Low, and Bandpass Filters
• 10 individually assignable outputs

No Fit Icon Doesn't fit your A4

• 31 Band Graphic EQ
• Bas Knob Included
• Independent High, Low, and Bandpass Filters
• 10 individually assignable outputs

Axxess AXDSPX-HK2

Data Interface Amp Bypass Harness and DSP for Select select 2011-2025 vehicles from Hyundai, Kia

AXDSPX-HK2 big DISCONTINUED
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Axxess AXDSPX-HK2

Data Interface Amp Bypass Harness and DSP for Select select 2011-2025 vehicles from Hyundai, Kia

• Compatible with select 2011-2025 vehicles from Hyundai, Kia Vehicles
• Plug-n-play harness for DSP
• AXDSP-X included
• Bass knob included
• Amplifier bypass harness included
• Retains the ability to work with SPDIF digitally amplified systems
• Amplifier does NOT need to be retained
• Wiring will need to be done at the amplifier location

No Fit Icon Doesn't fit your A4

• Compatible with select 2011-2025 vehicles from Hyundai, Kia Vehicles
• Plug-n-play harness for DSP
• AXDSP-X included
• Bass knob included
• Amplifier bypass harness included
• Retains the ability to work with SPDIF digitally amplified systems
• Amplifier does NOT need to be retained
• Wiring will need to be done at the amplifier location

Axxess AXDSPL-HK3

DSP Interface With Amp Bypass Harness - select 2017-2025 vehicles from Kia, Hyundai

AXDSPL-HK3 big DISCONTINUED
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Axxess AXDSPL-HK3

DSP Interface With Amp Bypass Harness - select 2017-2025 vehicles from Kia, Hyundai

• Includes a DSP (Digital Signal Processor)
• 15 Band graphic EQ
• 4 inputs and 6 individually assignable outputs
• Selectable crossover slopes; 12db, 24db, 36db, 48db
• Settings adjusted via Bluetooth® in a smart device application (tablet or mobile phone), compatible with both Android™ and Apple® devices
• Password protect feature available in the mobile app
• Micro-B USB updatable

No Fit Icon Doesn't fit your A4

• Includes a DSP (Digital Signal Processor)
• 15 Band graphic EQ
• 4 inputs and 6 individually assignable outputs
• Selectable crossover slopes; 12db, 24db, 36db, 48db
• Settings adjusted via Bluetooth® in a smart device application (tablet or mobile phone), compatible with both Android™ and Apple® devices
• Password protect feature available in the mobile app
• Micro-B USB updatable

Axxess AXDSPL-MST1

DSP Interface With Amp Bypass Harness for Select select 2014-2018 vehicles from Chevrolet, GMC Vehicles

AXDSPL-MST1 big DISCONTINUED
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Axxess AXDSPL-MST1

DSP Interface With Amp Bypass Harness for Select select 2014-2018 vehicles from Chevrolet, GMC Vehicles

• Compatible with select 2014-2018 vehicles from Chevrolet, GMC Vehicles
• Includes a DSP (Digital Signal Processor)
• 15 Band graphic EQ
• Selectable crossover slopes; 12db, 24db, 36db, 48db
• Settings adjusted via Bluetooth® in a smart device application (tablet or mobile phone), compatible with both Android and Apple devices
• Micro-B USB updatable
• Retains OnStar® voice prompts
• Each channel can be delayed independently up to 10ms

No Fit Icon Doesn't fit your A4

• Compatible with select 2014-2018 vehicles from Chevrolet, GMC Vehicles
• Includes a DSP (Digital Signal Processor)
• 15 Band graphic EQ
• Selectable crossover slopes; 12db, 24db, 36db, 48db
• Settings adjusted via Bluetooth® in a smart device application (tablet or mobile phone), compatible with both Android and Apple devices
• Micro-B USB updatable
• Retains OnStar® voice prompts
• Each channel can be delayed independently up to 10ms

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    FAQ Frequently asked questions in Discontinued 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.

    All About Discontinued Factory OEM Amplifier Bypass Harnesses

    Looking for the best factory amp bypass harnesses? Your search ends here! At Sonic Electronix, we offer a premium selection of factory amp bypass harnesses designed to seamlessly integrate with your car audio system. Say goodbye to factory amp limitations and unlock the full potential of your aftermarket setup with our top-notch bypass harnesses. Upgrade your car audio experience today and browse our wide range of factory amp bypass harnesses to find the perfect fit for your vehicle.

    Factory Amp Bypass Harnesses - Unleash Your Car Audio Potential

    Factory amplifiers can be a hindrance when upgrading your car audio system. They often come with limitations that can affect the performance of your aftermarket components. Factory amp bypass harnesses offer a solution to this problem by allowing you to bypass the factory amplifier and connect your aftermarket stereo directly to your vehicle's speakers.

    One of the primary advantages of using a factory amp bypass harness is improved sound quality. By bypassing the factory amplifier, you eliminate any signal interference or distortion caused by the stock amplifier, resulting in cleaner and more accurate sound reproduction.

    Additionally, factory amp bypass harnesses simplify the installation process. They are designed to plug directly into your vehicle's existing wiring harness, eliminating the need for cutting or splicing wires. This plug-and-play feature makes the installation hassle-free and ensures a professional-looking setup.

    Sonic Electronix - Your Source for Premium Factory Amp Bypass Harnesses

    At Sonic Electronix, we understand the importance of having a high-quality factory amp bypass harness for your car audio upgrade. That's why we offer a wide selection of bypass harnesses from reputable brands known for their exceptional performance and durability.

    Our team of experts is always ready to assist you in finding the right factory amp bypass harness for your specific vehicle and audio setup. Feel free to reach out to us at 1-502-200-8010, and our knowledgeable staff will guide you through the selection process.

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