there are many ways to determine whether the fuse in the car fuse box is damaged.
first, find the fuse box, usually under the left dashboard or in the engine compartment.
next, you can use these methods to determine.
1.first, it is the direct observation method, using the eyes to look at the fuse, if the connection wire between the two pins is broken, then the fuse is blown.
2.use tools like a multimeter or voltage tester. first, locate the fuse. carefully remove the fuse box, identify the fuse using the diagram, and pull it out with tweezers to check for melting. if melted, replace it with a suitable spare fuse. insert the key to power the vehicle, then connect the voltage tester's negative terminal to the car's ground wire while touching the tip to the fuse's metal contact. a lit tester indicates normal operation; if not, there's a fault. alternatively, set the multimeter to the circuit test mode: place the black probe on one side of the fuse hole and the red probe on the opposite side. if the needle moves, it means the fuse is powered and intact. no movement indicates a blown fuse.
another thing is that if you look at it with the naked eye, if the fuse is broken in the middle, it's burned out, and if it's not broken, it's normal.
if you're sure the fuse is blown, most vehicles have a different model of spare fuse in the fuse box, so just replace it with the same model as the damaged one.
but if the new fuse just plugs in and burns out, you should find a professional to check and repair it. never replace it with a fuse with a higher current, or it may damage the electrical equipment.
in addition, many people now have high-power electrical equipment such as air pumps and vacuum cleaners in their cars. when using them, they should pay attention to whether the power supply of the dashcam is the cigarette lighter fuse. if so, when starting the car, turning on the dashcam and high-power equipment such as air pumps at the same time may burn out the cigarette lighter fuse.
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