Car audio & accessories, explained
Upgrade your car’s sound and gear the right way.
Clear guides to stereos, speakers, amps, subwoofers and cameras: what fits your car, how to wire it and how to fix it when it goes quiet.
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Explore Car Audio Guides
Pick a topic for install steps, wiring help and buying advice.
Car Stereos & Head Units
Single vs double DIN, Bluetooth, CarPlay and steering wheel controls.
Explore topic →02Car Speakers
Sizes, fit, component vs coaxial and speaker wiring explained.
Explore topic →03Amplifiers & Wiring
Amp kits, fuses, gain setting and protect-mode fixes.
Explore topic →04Subwoofers & Bass
Box types, sizing, wiring and tuning for clean bass.
Explore topic →05Dash Cams
Mounting, hardwiring, parking mode and recording problems.
Explore topic →06Backup Cameras
Adding a reverse camera to factory and aftermarket screens.
Explore topic →Featured reading
Start Here: Popular Upgrade Guides
The upgrades drivers ask about most, explained step by step.
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Where Does the Amp Turn on Wire Go on an Aftermarket Radio?
The amp turn-on wire goes to the head unit’s blue/white remote output, not the solid blue antenna lead. This guide covers meter…
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How to Test Subwoofer Phase with a Test Tone and Music
Play a fixed sine tone at your crossover point, compare normal and reversed polarity at the driver seat, then keep the setting…
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Is the Battery Pop Test Safe for Car Speakers?
A 1.5V AA battery pop test is generally safe for passive car speakers if you use a brief tap. Skip it on…
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Time-lapse vs Low Bitrate Parking Mode: Which Is Better?
Time-lapse fits long parking periods, while low bitrate parking mode fits fast-moving events and closer-to-real-time detail.
From the blog
Latest Car Audio Articles
New guides on stereos, speakers, amps and cameras.
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What Do You Need to Use Wireless CarPlay?
You need a compatible iPhone and a car or aftermarket unit that supports wireless CarPlay over…
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How to Power a Backup Camera From the Reverse Light
Use the reverse light as a trigger, not the camera’s main power source. Power the camera…
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How Long Should the Ground Wire Be for an Amp?
Keep the amp ground wire as short as possible, ideally under 18 inches, and use a…
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OFC vs CCA Amp Wiring Kit: What Is the Difference?
OFC carries more current with less voltage drop than CCA, and CCA only fits short, low-power…
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Subwoofer Parallel vs Series Wiring: What Impedance Will You Get?
Parallel wiring lowers impedance and series wiring raises it. See exact final loads for single- and…
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What Happens If You Put a Subwoofer in a Small Box?
A subwoofer in a box smaller than recommended usually loses low-bass extension, shifts resonance higher, and…
Recent Guides
- Where Does the Amp Turn on Wire Go on an Aftermarket Radio?
- How to Test Subwoofer Phase with a Test Tone and Music
- Is the Battery Pop Test Safe for Car Speakers?
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