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Car Stereo Installation & Accessories for your 2019 Avalon

Installing an aftermarket head unit involves more than just choosing a screen; it's about building a bridge between new technology and your vehicle's factory architecture. Without the right installation accessories, a high-end receiver can't provide the seamless look or the integrated functionality your car was designed with. From dash kits that match your interior texture to complex digital interfaces that talk to your vehicle's computer, these components are what make a professional-grade installation possible.

Whether you're looking to retain your steering wheel controls, adapt a proprietary antenna plug, or ensure your new Double-DIN screen sits flush in the dash, we carry a comprehensive selection of gear from industry leaders like Metra, Scosche, PAC, and iDatalink.

Use our FitFinder to find the exact parts required for your specific year, make, and model. It's the most reliable way to ensure your DIY project results in a factory-finished look.

It's a no-brainer. Get your installation gear here.

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PAC APH-TY02

18" Speaker Connection Harnesses for select 2007-2025 vehicles from Toyota, Lexus with Amplified Systems

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18" Speaker Connection Harnesses for select 2007-2025 vehicles from Toyota, Lexus with Amplified Systems

• Compatible with select 2007-2025 vehicles from Toyota, Lexus with factory amplified systems
• Connects aftermarket speakers to the factory speaker harness
• Quick and easy installation
• No cutting necessary
• Plugs directly into harness

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1
List price $109.00
-54% $49.99

In stock

• Compatible with select 2007-2025 vehicles from Toyota, Lexus with factory amplified systems
• Connects aftermarket speakers to the factory speaker harness
• Quick and easy installation
• No cutting necessary
• Plugs directly into harness

Metra 40-LX11

Connect your factory antenna to a new aftermarket radio for select 2006-2025 vehicles from Toyota, Subaru, Lexus

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Connect your factory antenna to a new aftermarket radio for select 2006-2025 vehicles from Toyota, Subaru, Lexus

• Antenna adapter for select 2006-2025 vehicles from Toyota, Subaru, Lexus
• Use for replacing vehicle radio
• Male Motorola connector on one end
• Female Molex connector on other end

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List price $17.99
-17% $14.99

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• Antenna adapter for select 2006-2025 vehicles from Toyota, Subaru, Lexus
• Use for replacing vehicle radio
• Male Motorola connector on one end
• Female Molex connector on other end

Axxess AXUSB-TY6

Factory USB Port Retention Adapter in select 2018-2025 vehicles from Toyota

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Factory USB Port Retention Adapter in select 2018-2025 vehicles from Toyota

• Factory USB Retention Adapter
• Retains the OE USB port on compatible stereos
• Compatible with select 2018-2025 vehicles from Toyota

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List price $18.99
-11% $16.99

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Only 1 Left!

• Factory USB Retention Adapter
• Retains the OE USB port on compatible stereos
• Compatible with select 2018-2025 vehicles from Toyota

iDataLink Maestro ACC-USB-TO3 USB Adapter

Connect Factory USB Port to Aftermarket Car Stereo in select 2018-2025 vehicles from Toyota

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Connect Factory USB Port to Aftermarket Car Stereo in select 2018-2025 vehicles from Toyota

• USB adapter for select 2018-2025 vehicles from Toyota
• Retains vehicle's factory USB port
• Connects factory USB port on aftermarket stereos

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1
List price $25.99
-23% $19.99

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• USB adapter for select 2018-2025 vehicles from Toyota
• Retains vehicle's factory USB port
• Connects factory USB port on aftermarket stereos

Crux SWRTY-61C

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2016-2025 vehicles from Toyota with Factory Amplified Systems

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Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2016-2025 vehicles from Toyota with Factory Amplified Systems

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

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List price $174.30
-36% $112.05

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Only 2 Left!

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

iDataLink Maestro ACC-SAT-TO2 Antenna Adapter

Connect Factory Satellite Radio Antenna to Aftermarket Satellite Stereo Tuner for select 2012-2025 vehicles from Toyota

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Connect Factory Satellite Radio Antenna to Aftermarket Satellite Stereo Tuner for select 2012-2025 vehicles from Toyota

• Satellite radio antenna adapter for select 2012-2025 vehicles from Toyota
• Plugs connect directly to factory connectors
• Includes 2 adapters to connect GPS to aftermarket stereos
• Includes 1 adapter for connecting Toyota satellite stereo antenna to aftermarket satellite stereo tuner

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List price $35.99
-17% $29.99

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• Satellite radio antenna adapter for select 2012-2025 vehicles from Toyota
• Plugs connect directly to factory connectors
• Includes 2 adapters to connect GPS to aftermarket stereos
• Includes 1 adapter for connecting Toyota satellite stereo antenna to aftermarket satellite stereo tuner

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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List price $62.99
-41% $36.99

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Only 2 Left!

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

iDataLink ADS-MIC1

Factory Microphone Retention Interface Module for select 2010-2024 vehicles from Ford, Subaru, Toyota (Requires ADS-MSR, MRR, or MR2 Module)

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Factory Microphone Retention Interface Module for select 2010-2024 vehicles from Ford, Subaru, Toyota (Requires ADS-MSR, MRR, or MR2 Module)

• Factory microphone retention interface module
• Retains the factory microphone when adding an aftermarket stereo
• Compatible with select 2010-2024 vehicles from Ford, Subaru, Toyota

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List price $99.99
-20% $79.99

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• Factory microphone retention interface module
• Retains the factory microphone when adding an aftermarket stereo
• Compatible with select 2010-2024 vehicles from Ford, Subaru, Toyota

Metra 70-1765 Wiring Harness

Install a new car stereo and retain factory amplifier in select 2017-2023 vehicles from Toyota

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Install a new car stereo and retain factory amplifier in select 2017-2023 vehicles from Toyota

• Direct Connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required
• Retains balance and fade
• Designed for non-amplified models
• Pre-wired for ASWC-1 (Sold separately)

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List price $73.99
-11% $65.99

In stock

• Direct Connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required
• Retains balance and fade
• Designed for non-amplified models
• Pre-wired for ASWC-1 (Sold separately)

iDataLink Maestro HRN-HRR-TO3 Wiring Harness

Install a New Car Stereo in select 2018-2024 vehicles from Toyota (Requires ADS-MRR or ADS-MRR2 Module)

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Install a New Car Stereo in select 2018-2024 vehicles from Toyota (Requires ADS-MRR or ADS-MRR2 Module)

• Fits select 2018-2024 vehicles from Toyota
• Designed for use with iDataLink ADS-MRR or iDataLink ADS-MRR2 module (Sold separately)
• Retains select factory features
• Provides navigation and illumination outputs

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List price $89.99
-17% $74.99

In stock

Only 3 Left!

• Fits select 2018-2024 vehicles from Toyota
• Designed for use with iDataLink ADS-MRR or iDataLink ADS-MRR2 module (Sold separately)
• Retains select factory features
• Provides navigation and illumination outputs

Axxess AXBT Wiring Interface

Install a New Car Stereo and Retain Vehicle Customization via Bluetooth in select 2012-2026 vehicles from Toyota, Mazda, Ram

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Install a New Car Stereo and Retain Vehicle Customization via Bluetooth in select 2012-2026 vehicles from Toyota, Mazda, Ram

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

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List price $196.99
-49% $99.99

In stock

Only 2 Left!

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

Axxess AXDIS-TY3 Wiring Interface

Install New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2018-2024 vehicles from Toyota

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Install New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2018-2024 vehicles from Toyota

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

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List price $262.99
-10% $235.99

In stock

Only 3 Left!

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

PAC USBTY3

Install a New Car Stereo and Retain OEM USB Port for select 2018-2022 vehicles from Toyota

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Install a New Car Stereo and Retain OEM USB Port for select 2018-2022 vehicles from Toyota

• OEM USB port retention cable for select 2018-2022 vehicles from Toyota
• Retains use of OEM USB port when replacing factory radio
• No cutting or splicing required
• USB and empty port on each end

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List price $29.00
-34% $19.00

Available

Ships in 10-14 days

• OEM USB port retention cable for select 2018-2022 vehicles from Toyota
• Retains use of OEM USB port when replacing factory radio
• No cutting or splicing required
• USB and empty port on each end

Crux SWRTY-61P

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2018-2025 vehicles from Toyota with Factory JBL Amplified Systems

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Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2018-2025 vehicles from Toyota with Factory JBL Amplified Systems

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

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List price $212.10
-36% $136.35

In stock.

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

PAC RP4.2TY13

Install New Car Stereo and Retain Steering Wheel Controls, Factory Amplifier, and Other Factory Features In select 2018-2023 vehicles from Toyota

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Install New Car Stereo and Retain Steering Wheel Controls, Factory Amplifier, and Other Factory Features In select 2018-2023 vehicles from Toyota

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required
• Compatible with select 2018-2023 vehicles from Toyota

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List price $369.00
-32% $250.00

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Ships in 10-14 days

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required
• Compatible with select 2018-2023 vehicles from Toyota

SiriusXM SXV300v1

Add Satellite Radio to Any SiriusXM-Ready Car Stereo

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Add Satellite Radio to Any SiriusXM-Ready Car Stereo

• Includes Hideaway Tuner and Magnetic Antenna
• Pause, Rewind, and Replay Up To 60 Minutes of Live Radio
• Alert Notification When Favorite Song, Team or Artist is Playing

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153
List price $89.99
-22% $69.99

In stock

Used from: $44.99 Like New from: $50.99
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List price $9.95
-71% $2.88

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• Standard DIN Factory Radio Removal Tools

Waterproof Marine Grade Cigarette Lighter Socket (Female) (Belva BAWPL)

12V-16V Locking Cigarette Lighter Port/Socket for Car Charger Power; Great for Cars, Trucks, SUV, ATV/UTV, SSV

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12V-16V Locking Cigarette Lighter Port/Socket for Car Charger Power; Great for Cars, Trucks, SUV, ATV/UTV, SSV

• 12V - 16V Volt Waterproof Locking Cigarette Lighter Port
• Multiple Mounting Options

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2
List price $7.99
-63% $2.99

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• 12V - 16V Volt Waterproof Locking Cigarette Lighter Port
• Multiple Mounting Options

PAC USBDMA3

3 ft USB Extension Cable with Dash Mounting Brackets

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3 ft USB Extension Cable with Dash Mounting Brackets

• 3 ft / 36" USB extension cable
• Connects to the rear-panel USB port
• Flush-mountable or dash-mountable design

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List price $49.00
-55% $21.99

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• 3 ft / 36" USB extension cable
• Connects to the rear-panel USB port
• Flush-mountable or dash-mountable design

iDataLink Maestro ACC-HU-KEN1

Connect Select Kenwood and JVC Stereos to Compatible iDataLink Maestro T-Harnesses

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Connect Select Kenwood and JVC Stereos to Compatible iDataLink Maestro T-Harnesses

• Connect select Kenwood and JVC stereos to compatible Maestro T-harnesses
• No cutting or splicing required
• Requires iDatalink Maestro RR, RR2, or SR modules
• Requires compatible iDataLink Maestro T-harness

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List price $19.99
-25% $14.99

In stock

• Connect select Kenwood and JVC stereos to compatible Maestro T-harnesses
• No cutting or splicing required
• Requires iDatalink Maestro RR, RR2, or SR modules
• Requires compatible iDataLink Maestro T-harness

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    FAQ Frequently asked questions in Car Stereo Installation & Accessories


    In most modern vehicles, the factory radio is part of a larger, integrated dash panel rather than a standardized rectangular box. A vehicle-specific dash kit provides the necessary brackets and trim pieces to adapt the universal ISO-mount of an aftermarket stereo to the unique shape and mounting points of your dashboard.

    Choosing the right Car Stereo Installation & Accessories begins with understanding your vehicle's make, model, and year. This information helps you select compatible wiring harnesses and mounting kits. Next, consider your audio preferences. If you're looking to upgrade your car's sound system significantly, opt for an amplifier installation kit that matches your amplifier's power requirements.Additionally, check the head unit's compatibility with your smartphone and other devices.

    Features like Bluetooth connectivity, Apple CarPlay, or Android Auto can greatly enhance your driving experience. Ensure that the accessories you choose align with your car audio goals, whether it's improved sound quality, convenience, or connectivity.

    Not if you use a Steering Wheel Control (SWC) interface. These modules translate the signals from your factory buttons into a language your new stereo understands. Many modern integration harnesses, like the iDatalink Maestro, include this functionality along with the ability to display engine data and tire pressure on your new screen.
    We strongly recommend using a wiring harness. Cutting factory wires is permanent, increases the risk of short circuits, and can void your vehicle's electrical warranty. A harness allows you to do all your soldering or crimping on the bench, then simply plug the new assembly into the factory connector without damaging the car's original wiring.

    Safety is paramount during Car Stereo Installation & Accessories installation. Start by disconnecting the car's battery to avoid electrical accidents. When handling wiring and electrical connections, follow proper insulation techniques to prevent short circuits or fires. Secure all cables and wires away from moving parts like steering columns and pedals.

    During the installation of amplifiers and subwoofers, ensure that they are securely mounted to prevent movement while driving. Avoid drilling into gas tanks, brake lines, or other sensitive areas when installing components. It's also a good practice to have a fire extinguisher and a first aid kit on hand in case of emergencies.

    All About

    Car Stereo Installation & Accessories

    Navigating the hardware required for a radio swap can be confusing. To get the job done right the first time, it's helpful to understand the specific role each accessory plays in the signal chain and the physical assembly.

    Dash Kits: The Cosmetic Foundation

    The dash kit is what ensures your new stereo doesn't look like an afterthought. These kits are engineered to match the exact color, texture, and contour of your factory dash.

    • Single-DIN Kits: Feature a 2-inch tall opening, often including a storage pocket to fill the extra space.
    • Double-DIN Kits: Feature a 4-inch tall opening designed for large touchscreens and multimedia receivers.
    • Multi-Kits: Versatile designs that can be configured for either size depending on your hardware choice.

    Wiring Harnesses and Data Interfaces

    The wiring harness is the electrical nervous system of your install.

    • Standard Harnesses: Provide basic power, ground, and speaker connections for older vehicles.
    • Data Interfaces: Required for modern vehicles with CAN-bus systems. These modules "talk" to the car’s computer to provide a 12V switched power source (which many new cars lack at the radio) and retain safety features like door chimes, OnStar, or factory amplifiers.

    Steering Wheel and Camera Retention

    Convenience and safety shouldn't be sacrificed for better sound. Dedicated interfaces allow you to keep your hands on the wheel and your eyes on the screen when reversing. If your vehicle has a factory backup camera, a camera retention adapter allows you to feed that video signal directly into your new touchscreen's RCA input.

    Professional Installation Tools

    Using the wrong tools can lead to cracked plastic or scratched leather. A set of nylon trim removal tools is essential for prying off dash panels without leaving permanent pry marks. Additionally, we recommend high-quality crimp connectors or heat-shrink tubing to ensure your electrical connections remain stable through years of vehicle vibration.

    The Sonic Electronix Advantage

    We take the guesswork out of the DIY process. When you use our vehicle selector, we don't just show you parts that "might" work; we curate a list of accessories verified to fit your specific cabin. As an Authorized Online Retailer for reputable brands, every interface and kit we sell is backed by full technical support to help you through the trickiest parts of your installation.

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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!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
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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.