Practically the best device for checking a fuse is the sight and the tester designed for this. We check the fuse under load. The meter can, in short, turn us into a balloon.
A simple sampler from the market for PLN 5-10.
This one was slightly modified for my needs.
We start checking with checking the instrument. Crocodile clip to ground, and the tip to the plus: shines = working.
We start checking our fuses. In this case it is possible to check without pulling out.
And remember that if we check the fuse from, for example, parking lights, we have to turn on the lights.
Checking yourself is very easy.
The crocodile clip to the ground, and the tip touches the fuse, first on one side, then on the other. When the test lamp is lit here and here, our fuse is working.
Here is an example of a functional fuse - the wire is intact.
And here the same fuse blown.
Another curiosity - in cars you can also find automatic fuses, like home ones - when it pops out, press a button and it works. It looks like.
The one in the picture is "stamped"
And here it is ready to go again.
There are also fuses that need to be pulled out to be checked. We can also check them in a simple way. Here is an example of a circuit breaker.
And one more important thing - the fuse, as the name suggests, is supposed to protect something. This must be the weakest element in the protected circuit. Replacing it with a larger one will end up with burning something, installation, driver, car, etc.
A simple sampler from the market for PLN 5-10.
This one was slightly modified for my needs.
We start checking with checking the instrument. Crocodile clip to ground, and the tip to the plus: shines = working.
We start checking our fuses. In this case it is possible to check without pulling out.
And remember that if we check the fuse from, for example, parking lights, we have to turn on the lights.
Checking yourself is very easy.
The crocodile clip to the ground, and the tip touches the fuse, first on one side, then on the other. When the test lamp is lit here and here, our fuse is working.
Here is an example of a functional fuse - the wire is intact.
And here the same fuse blown.
Another curiosity - in cars you can also find automatic fuses, like home ones - when it pops out, press a button and it works. It looks like.
The one in the picture is "stamped"
And here it is ready to go again.
There are also fuses that need to be pulled out to be checked. We can also check them in a simple way. Here is an example of a circuit breaker.
And one more important thing - the fuse, as the name suggests, is supposed to protect something. This must be the weakest element in the protected circuit. Replacing it with a larger one will end up with burning something, installation, driver, car, etc.
Cool? Ranking DIY
when I am in Wolumen, I will look for and buy a few, on the so-called "will be usefull".
Losses must be sometimes 
