Plain-English guides
Clear answers on car tech and accessories
Learn how dash cams, scanners, mounts, lights, speakers, and chargers work, plus what to check before you buy or install.
Clear steps
Short guides that make each setup or fix easy to follow.
Source based
We use product details, manuals, and other public sources.
Kept current
Guides are reviewed and updated as products and details change.
Clear disclosure
Affiliate links are labelled. See how we earn on our disclosure page.
What we cover
Guides by topic
Pick a topic and get a simple guide.
Dash Cams
Dash cams explained: front and rear models, night recording, parking mode and how dash cams are fitted.
OBD2 Scanners
What an OBD2 scanner does, scanner vs code reader and how to use one, with beginner-friendly picks.
Phone Mounts
Car phone mounts for dashboards, vents and windshields, including options for thick cases and larger phones.
Car Speakers
Car speaker size guides, coaxial vs component speakers and fixes for common speaker problems.
Car LED Lights
Interior and exterior car LED lights: LED vs halogen bulbs, how to choose them and basic installation guidance.
USB Car Chargers
USB-A vs USB-C car chargers, fast charging for phones and what to check when a car charger stops working.
From the blog
Latest guides
See the newest guides and fixes here.
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Are OBD2 Scanners Compatible with All Cars?
No. OBD2 scanners are compatible only when the car’s port, protocol, and market rules line up with the tool.
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Why Are My Front Car Speakers Not Working?
Check radio fade, mute, fuses, amp power, wiring, and the speaker itself to isolate why front car speakers stopped working.
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USB-A vs USB-C Car Charger: What Is the Difference?
USB-A is the older rectangular plug, while USB-C is smaller and reversible. Charging speed depends on the charger standard, not the port shape alone.
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Are Magnetic Phone Holders Bad for Your Phone?
Magnetic phone holders are usually safe for most phones, but poor placement can block charging, affect NFC, or cause heat and signal issues.
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Dual Dash Cam vs Single Dash Cam: Which Should You Buy?
Choose a single front dash cam for road-event proof; choose front-rear for parking hits and rear-end disputes; choose front-inside for rideshare or fleet cabin…
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LED Headlights vs Halogen: Which Is Better for Your Car?
LED headlights work best in housings designed for them; in most factory halogen cars, a quality halogen replacement is the safer choice. This guide…
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About
About Exfig
Exfig publishes plain-English guides on dash cams, OBD2 scanners, mounts, audio, lights, and chargers. Each guide focuses on one clear question.
We may earn a commission from qualifying Amazon purchases made through links on this site. Read our affiliate disclosure.
How we write our guides
- Research-basedGuides start from real search questions and product details.
- Plain EnglishShort answers first, with no jargon.
- Updated when products changeWe revisit guides as products and advice change.