Automotive fuses are located in a fuse panel in a fuse box. The majority of vehicles are equipped with two fuse boxes; one is located in the passenger cabin; the other is under the hood. Consult the owner’s manual to find the exact location of the boxes in your car.
Fuses protect the car’s electrical systems from becoming overloaded when a malfunction occurs. The panel under the hood typically controls the car's major systems, such as the transmission and the engine. The panel in the cabin is dedicated to the interior systems, such as lights and climate controls. There is usually an electrical-circuit diagram in the fuse box that gives detailed information about the particular function of each fuse.