What is a meter fuse that located in the box and functions also if you put higher amp will it cause fire or problems to vehicle?

A meter fuse, located in a fuse box, is a safety device designed to protect electrical circuits in a vehicle (or other system). It's essentially a one-way valve for electricity. It allows a specific amount of current (amperage) to flow through it. If the current exceeds that rating, the fuse melts, breaking the circuit and preventing damage to other components.

What happens if you put a higher amperage fuse in place of a lower one?

Yes, using a higher-amperage fuse than specified is extremely dangerous and can lead to several problems, including fire:

* Overheating and Fire: The purpose of the fuse is to protect the wiring and components from drawing too much current. If the fuse's rating is too high, it won't blow even if excessive current flows through the circuit. This excessive current will cause the wires to overheat, potentially melting insulation, sparking, and ultimately causing a fire.

* Component Damage: The increased current can damage other electrical components in the vehicle, such as the alternator, radio, computer modules (ECUs), and even the wiring harness itself. This damage can lead to expensive repairs or complete system failure.

* Short Circuits: A higher amperage fuse won't protect against short circuits, which can draw incredibly high currents. This increases the risk of a fire dramatically.

In short: Never use a higher amperage fuse than the one specified. If a fuse keeps blowing, it indicates a problem in the circuit that needs to be addressed, not a need for a larger fuse. Finding and fixing the underlying problem is crucial for the safety and proper functioning of your vehicle.