15% OFF all with code NVX4U | 10% OFF* sitewide with code TEN4U*Exclusions
Find everything you need to install car audio system including wiring harness, dash kits, amp kits and more. Without the proper accessories, you audio system won?t sound as good as it should be. To get the full potential from your car electronics gear, pick up accessories such as Bluetooth car kits, satellite radio, HD radio, Android and iPhone Adapters and more.

Car Audio Accessories & Installation Parts

Find everything you need to install car audio components. We have car amplifier installation kits, car stereo install dash kits, car speaker adapters, installation tools, car subwoofer installation wire, and many other install parts. You'll also find the right car audio accessories to get the full potential from your car electronics such as Bluetooth car kits, Android and iPhone car stereo adapters, SIRIUS XM Satellite Radio and more.
Car Stereo Accessories & Installation
Amplifier Installation & Accessories
Subwoofer Installation & Accessories
Speaker Installation & Accessories
Cables, Wire, Adapters & Connectors
Car Batteries, Capacitors & Power
Sound Damping & Deadening ("Dampening")
Audio System Optimization & Tuning
SiriusXM Satellite Radio
Android & Apple iPhone Integration
Radar Detectors & Accessories
Interior Vehicle Accessories
Tools & Custom Fabrication
Video Accessories & Installation
How-to & Training DVDs
Other Car Audio Accessories
Bluetooth Car Kits

Top Sellers in Car Audio Accessories & Installation Parts

  • 4.5
8 reviews

Universal Bluetooth Audio Receiver & Volume/Playback Controller Knob for Cars, Trucks, Motorcycles, ATVs & Boats (X-Series)

• iPhone, Android & Bluetooth Device Ready
• One Knob Controls it all - Track, Pause & Volume
• Flush in Dash or Under Dash Mounting options
• Add-on to any Radio or Device with AUX input

FREE NVX XUBT3 Universal Bluetooth Controller with Purchase!

$49.99

IN STOCK

  • 4.6
9 reviews

Universal Bluetooth Audio Receiver for Cars/Vehicles and any other device with Aux Input

• Bluetooth Streaming Receiver
• Plugs into 12V Dash Outlet (cigarette lighter)
• 1/8" (3.5mm) Stereo Audio Output
• 5 Volt DC USB Charging Output
• Bluetooth V4.0

Get 20% off an NVX Universal Bluetooth Receiver w/ Purchase!

$13.99

IN STOCK

12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (1.0 cu ft airspace 12SQTC)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

FREE Sealed Enclosure with Your Subwoofer Purchase!

$39.99

IN STOCK

Two fuses per order. High quality 200 Amp ANL Fuses

• 200A ANL Fuse
• 2 Pack
• Nickel Plated
• Resealable Polybag
• Heavy Duty Construction

$2.99

IN STOCK

Complete 4 Gauge Amplifier Wiring Kit with 2-Channel RCA Interconnects (CCA Wiring)

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire

$29.99

IN STOCK

  • 5.0
6 reviews

Premium Sound Deadening Bulk Pack 40 Square feet (Entire Car), Ten 18" x 32" Sheets (91mil Thick)

• Solid Black for Any Stealth Car Audio Installation
• 2.3mm (91mil) thick for better performance
• Quiets Vibrations
• Stops Rattles
• Increases SPL (DB's)
• Reduces Heat
• Simple To Install
• Easy To Form Aluminum
• Four Step Peel and Stick Installation
• Ten 18" x 32" Pieces

Free Roller with Purchase of Select Sound Deadener!

$109.95

IN STOCK

Only 1 Left!

Wire Harness To Connect An Aftermarket Stereo Receiver to Select 1998-2009 Ford Vehicles

• In-Dash Car Radio Harness That Plugs Into Factory OEM Radio Plug
• For Select 1998-Up Ford Vehicles
• No Cutting Wires
• Converts Colors To Aftermarket Standard

$8.95

IN STOCK

Wire Harness to Connect an Aftermarket Stereo Receiver to Select 2003-2009 Ford Vehicles

• In-Dash Car Radio Harness That Plugs Into Factory OEM Radio Plug
• For Select 2003-Up Ford Vehicles
• No Cutting Wires
• Converts Colors To Aftermarket Standard

$3.99

IN STOCK

True 10 Farad Stiffening Hybrid Capacitor with Digital Display and Built-in Distribution Block

• For High-Powered systems
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

$159.99

IN STOCK

Antenna Adapter for 1988-up for Chevrolet / GM Radios (MDA-1B)

GM / Chevrolet Antenna Adapter • Aftermarket Antenna Male (Motorola Plug) to Factory Radio Female (Proprietary Plug)

$3.99

IN STOCK

Universal Waterproof Bluetooth Audio Receiver for Cars, Vehicles, Motorcycles/ATVs & Marine/Boat Use (V-Series)

• Bluetooth Profile: A2DP (High-Quality, Stereo Audio)
• Bluetooth Core Specification: Version 4.0 with aptX
• Outputs One Stereo Pair, Low-Level RCA Plugs
• Output Voltage: 2V RMS
• Signal to Noise Ratio: 93 dB (20 Hz - 20 kHz)
• Input Operating Voltage: 8 - 28 VDC

50% off Bluetooth Receiver with Your NVX Amplifier Purchase!

$29.99

IN STOCK

Antenna Adapter for 2002-up Chrysler, Dodge and Jeep Vehicles

2002-up Chrysler/Dodge/Jeep Antenna Adapter • Aftermarket Antenna Male (Motorola Plug) to Factory Radio Female (Proprietary Plug)

$3.99

IN STOCK

500 Amp Relay Isolator (BIR500)

• 500 Amp Battery Isolator
• 500 Amps at 12V Continuous
• 700 Amps Surge
• Switching Power: 10 - 16 VDC

$59.99

IN STOCK

Universal Remote Level Control with Female RCA Audio Interconnect

• Dash Mounted Amplifier Level Control for Volume Adjustment
• Perfect For Balancing the System to Change Music Styles
• Adjust Amplifier Gain While Driving

$7.99

IN STOCK

Wire Harness to Connect an Aftermarket Stereo Receiver to Select 1987-up Toyota Vehicles

• In-Dash Car Radio Harness That Plugs Into Factory OEM Radio Plug
• For Select 1987-Up Toyota Vehicles
• No Cutting Wires
• Converts Colors To Aftermarket Standard

$3.99

IN STOCK

1000W Complete Bass Package with Two 10" Subs in Ported Box, Monoblock Amplifier and Amp Kit (BPKG210 v2)

• Includes Everything You Need: Subs, Box, Amp & Wires
• Dual 10" Belva Subwoofers
• Monoblock Amp
• Ported Enclosure
• Complete Amp Kit w/ RCAs

10% Off a Sound Dampening Kit with Your Subwoofer Purchase!

$179.99

IN STOCK

80W 2-Channel Line Output Converter with Digital Noise Filter + Line Driver

• 6:1 Step Down With Adjustable Output
• DC Amplifier Turn On Trigger
• 80w Maximum Input total (40w per channel)

$16.99

IN STOCK

5 ft. of Metallic Powder Blue EnvyFlex True Spec 4-Gauge Power/Ground Wire Cable

Metallic Powder Blue 4-Gauge Power/Ground Wire Cable • Silver-Tinned 100% Virgin Copper • EnvyFlex Outer Jacket • Length: 5 Feet

$15.99

IN STOCK

Dual 12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/Polyfil (2.46 cu ft Airspace - 12SQB)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

50% Off Speaker Wire with Enclosure Purchase

$49.99

IN STOCK

Wire Harness to Connect an Aftermarket Stereo Receiver to Select 1988-2005 GM Vehicles

• In-Dash Car Radio Harness That Plugs Into Factory OEM Radio Plug
• For Select 1988-05 GM Vehicles
• No Cutting Wires
• Converts Colors To Aftermarket Standard

$3.99

IN STOCK

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Car Audio Accessories & Installation Parts Information

Car Audio Accessories: Everything You Need for you Install

The Car Audio Accessories & Installation category is your one-stop shop for speaker installations, car stereo installations, car batteries, sound dampening, tools for custom fabrication, wiring and much much more! Here you can find the things you need for the DIY installer, professional installations, quick fixes and simple solutions.

Car Stereo and Speaker Installations

Here at Sonic Electronix, we love everything about car audio, even the installs! We know how hard it is sometimes trying to find everything you need for an install. That's why we supply what you'll need such as dash kits, wiring harnesses, antenna adapters, steering wheel control interfaces and car stereo removal tools.

Amplifier Installations

Find the best amplifier wiring kits, capacitors, Big 3 upgrade kits, terminals and connectors, fuses, circuit breakers, distribution blocks and much more here. We carry speaker, power and ground wire in the popular gauge sizes for your car audio system install. Whether you're looking for CCA or OFC wiring, we got you covered. If you need to optimize your current car audio setup, we have voltage monitors, cooling fans, high output alternators and car batteries specifically designed to handle high output car audio systems.

Cables, Adapters and Connectors

Looking for the right cables, wiring kits and adapters for you car audio system? You found them! We carry speaker, power and ground wire, RCA cables, zip ties, ring terminals, butt connectors, grommets and a lot more. You will find the right gauge size for your need car audio installation needs, high quality RCA cables to run from your car stereo to your amplifier and accessories stocked specifically for car audio installations. Using these adapters and connectors will give you a nice, clean, professional install.

Car Batteries, Alternators and Capacitors

In order to enjoy a pounding car audio system, you'll need to invest in your car's electrical system since most cars are not intended to run aftermarket audio setups. Having a high quality car audio setup can be taxing on the car's electrical system. This is where upgrading your car battery, alternator or the wiring comes in. These aftermarket car batteries and high output alternators are designed to supply an aftermarket audio system. If you're experiencing headlight dimming when playing your music, this is a sign that you should invest in a car battery or alternator. You can even look into adding a capacitor as a temporary solution. If adding a capacitor to fix a problem like headlight dimming, it would be better to add a high output car battery, alternator or upgrade the wiring when you can.