Where to Connect the Power Supply for a Dash Cam?

[Stewart]

The power supply for a dash cam can be connected to the cigarette lighter socket or to the ACC power source in the fuse box. Dash cams typically come with both built-in and external power supply interfaces. The built-in power source is usually a lithium battery, while the external power supply is generally provided through the cigarette lighter. For safety reasons, the capacity of the built-in battery is usually very small, as lithium batteries have limited capacity. Therefore, dash cams primarily rely on external power sources for operation. A dash cam is a device that records images, sounds, and other relevant information during vehicle travel. After installation, it can record the entire driving process in video and audio, providing evidence in case of traffic accidents. It is important to note that the recorded video footage from a dash cam should not be edited, as tampering with the footage may render it useless in the event of an accident.

[ZaneLee]

When I first installed a dash cam, I directly connected the power to the cigarette lighter, which was super easy. The cigarette lighter is located at the 12V socket inside the car—just plug it in, and it works. It starts recording when the car is turned on and automatically powers off after the engine stops. The downside is that the wires are easily exposed and may sway while driving, which is quite annoying. Later, I learned to hide the wires inside the roof lining or A-pillar and secure them with Velcro, making it much neater. Most dash cams work fine with this method—just remember to check the voltage compatibility, usually 5V or 12V. Don’t worry about complexity; this is the go-to method for beginners—safe and hassle-free. If the cigarette lighter is occupied, a USB port can also work, but the power output may be insufficient. Always refer to the manual during installation to avoid tangled wires near the steering wheel, ensuring a worry-free drive.

[DiAxel]

From a technical perspective, I prefer connecting the dashcam power supply to the fuse box. This location is under the vehicle's dashboard, such as in the compartment below the steering wheel. The connection method is very stable: first use a fuse tap to locate the ACC fuse position, then connect the dashcam power cable to ensure uninterrupted 24-hour power supply, making it suitable for all-day monitoring. The advantage is completely hidden wiring, keeping the interior clean without obstructing the view. The OBD-II port is also a good option, located below the steering column, which can read vehicle data for power supply but may affect warranty. The key is safe operation: use a multimeter to measure voltage to avoid short circuits and fires. This method is more durable than the cigarette lighter and is recommended for those with DIY experience. Once completed, it won't drain the battery.

[Amir]

The power connection position for the dash cam, the cigarette lighter is the safest starting point. Simply plug it in without modifying the vehicle's electrical circuit, reducing the risk of fire or short circuits. If the cable is too long, use cable ties to secure it under the dashboard to avoid tripping. It automatically cuts power after parking to protect the battery, which is super friendly for beginners. Connecting to a USB port is also an option, but the power might be insufficient. In short, avoid complicated methods—safety first. A reliable dash cam while driving is crucial, and the cigarette lighter can meet the needs without affecting normal use. After installation, test it by starting the recording to ensure it works properly. This way, daily driving will be worry-free.