The electrical circuits in the car have protection through fuses, circuit breakers, and fusible links, or the fuse block is under the instrument panel or in the engine compartment depending on the model year of the vehicle. Every fuse safeguards an individual circuit, and the circuits' name is usually inscribed on the cover plate of the fuse panel. Miniaturized fuses developed with the facility of blade terminal also makes their removal and installation very convenient. Electronic components should be checked for fuse if one of them blows, with the help of a test lamp which would indicate the presence of voltage at the exposed terminal ends; if the voltage is received at one end and not at the other then the fuse is blown and can also be seen as the element that is between the terminals melts whenever is blows. Dead fuses should be replaced with new fuses of the correct type since fuses that have different rating may look alike, but they should not be used interchangeably to provide the required protection rating on each circuit. The amperage value is printed at the body of the fuse, and if a replacement fuse blows immediately, it should not be replaced again until the cause of the problem, which in most cases it means short circuit as a result of a damaged or aged wire, is corrected.