What if you want your dashcam to record 24 hours or more—even when the engine is off? In this video I tested the Garmin Constant Power Cable (OBD power adapter) that gives your dashcam “always on” power without you turning on the car accessory. I show you the simple switch settings on the cable: 10 minutes, 24 hours, and infinite. Then I unbox it, point out what’s inside (manual + cable), and explain how the OBD plug and USB connection make the setup super straightforward. I installed it on a Nissan and I’ll be honest—I didn’t know where the OBD port was at first. My tip is simple: do a quick Google search for your car model, and you’ll find the OBD port location fast. Once plugged in, you can see power right away, and the dashcam starts recording even with the car off. My advice: don’t run infinite all the time. If you’re parked safely at home, 10 minutes is enough, but if you’re parking somewhere you’re not sure about, switch it to 24 hours for extra security.