Cars Simplified: Everything Automotive Explained


Fuses are components in the electrical system which are designed to go bad/blow out when the amperage gets too high along a circuit with a component that would be damaged by that level of amperage. Instead of replacing an expensive component, the fuse can be replaced at a much lower cost, and often more easily and/or faster.

Why Cars Have Fuses

In this video, answers the question "why do cars have fuses?" and covers some extra details you may become curious about along the way. This video was published July 27th, 2019.

Checking Fuses

No matter what fuse design you intend to replace, you should always replace a fuse with one of the same rating and size.

Standard automotive fuses, known as blade-type fuses, have a metal component in the middle which is just thick enough to handle anything below the amperage shown on the fuse. As long as this doesn't have a hole burned through it, it is a good fuse which can still be used.

German blade-type fuses (which are a solid color instead of a transparent color) have the metal component on the top instead of inside, so they can be checked while still plugged in. These can be replaced with another German blade-type fuse or a standard style blade-type fuse.

Glass tube style fuses have the metal element inside the tube. As with blade-type fuses, if that elelemt is burned out, it is bad and should be replaced.