OBD-II 12-volt power (better): Outliers like the Owl and PureCam use the OBD-II connector for constant 12-volt power.This provides always-on power, but it isn’t particularly easy to install. Hard-wired 12-volt power (better): Most vendors offer kits that connect the dash cam directly to a constant 12-volt source in your wiring harness behind the dash.It can lead to an unsightly cable run, and the power disappears when you turn off the car, but it’s universal and easy. Auxiliary 12-volt power (adequate): Most vendors have stuck with powering their dash cams via the auxiliary 12-volt power socket (also known as the cigarette lighter) and USB cables.Keep that in mind as you consider your power options: You can sometimes fix this with a longer or shorter cable (or a professional installation). That cable can sometimes be tucked out of the way, but more likely than not you’ll have loose cable hanging somewhere. Something most people don’t consider before they buy is that dash cams connect to a power source in your car via a physical cable. Some cameras opt for hard-wired internal storage, like the Miofive 4K. There are often bundles available with the card. Some come with larger cards, and some budget models come without. Incident recording triggered by impact (G) sensors, or when in parking mode (see below), by motion detection.The camera should have a setting that allows you to specify how long the camera runs off 12-volt before shutting down. This requires a battery or large super-capacitor (see below in “Power connections”).
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