Where to Connect Power for a Dash Cam?
2 Answers
Dash cams can be powered through the cigarette lighter socket, which is simple and convenient, or through the ACC power source in the fuse box, though this method is more complicated. Generally, dash cams come with both built-in and external power interfaces. The built-in power source is usually a lithium battery, while the external power source typically draws power from the cigarette lighter for driving safety. The built-in lithium battery must be protected from direct sunlight, and mounting the dash cam on the rearview mirror can help avoid exposure. The built-in power usually lasts about an hour, whereas the external power source is more convenient and provides longer-lasting power. Generally, ACC power supply is more complex to install, may affect the car's aesthetics, but offers extended power duration.
As an ordinary car owner who drives long-term, I always recommend using the cigarette lighter socket to power the dash cam. It's extremely simple to operate: just buy a compatible cigarette lighter power cable and plug it into the car's socket. The dash cam will automatically power on when the car is running and turn off when the engine is off, with no need for vehicle modifications. This method avoids circuit risks but occupies the socket, which may affect charging other devices. It's advisable to choose one with a USB expansion port. Generally, there's no power when the car is parked, so if the vehicle has an auto-start function, the dash cam will stop working. In terms of quality, using accessories from big brands can reduce voltage fluctuation issues. Overall, the cigarette lighter connection is the most cost-effective entry-level solution, especially suitable for older car models or car owners who don’t like to tinker.
