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.
-
How Do You Install a Vent Phone Mount Without Blocking Airflow?
Clip the mount to the outermost vent slat so the cradle stays secure and the vent opening stays clear. This guide covers placement for…
-
How to Install a Dashboard Phone Mount Without Damaging the Dash
Use suction on smooth hard plastic, or a removable adhesive pad on textured or curved dashes. Avoid airbag covers and heat-softened vinyl.
-
How to Connect a Bluetooth OBD2 Scanner to Your Car
Plug the Bluetooth OBD2 adapter into the OBD-II port, pair it with your phone, and connect the app. Then check the car, adapter, app,…
-
How to Use an OBD2 Code Reader Step by Step
Connect an OBD2 code reader to the 16-pin port, switch the key to ON, read the stored code, and decide whether to clear it.
-
Do You Need Parking Mode on a Dash Cam?
Use parking mode when your car sits where hit-and-run, theft, or vandalism is plausible and you can power the camera safely.
-
How to Fix Hyper Flash Without a Resistor
Stop hyper flash by using an LED-compatible flasher, coding out lamp monitoring, or fixing wiring faults instead of adding resistors.
Start here
How to use this site
Pick a topic
Choose the area you need help with from the topics above.
Read the guide
Each guide answers one question in plain English.
Compare and check price
Follow the product links to compare options and check the current price on Amazon.
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.