It's a good idea to store these in the glove compartment if your car isn't equipped with a place in the fuse panel to store them. The glove compartment is an ideal location to keep the fuses clean and dry.
Newer model cars and trucks rely heavily on their electrical systems. Ask anyone who has worked on them. Some of these models have up to three different fuse boxes.
An easy way to determine which box to check and which fuse to change is using the owner's manual. There should be a chart detailing those specifics included. If the chart is missing, the fastest way to find the faulty fuse is to test it with a test light or voltmeter.
Now, if the Boy Scouts’ rule has been forgotten, the option left for you is to check them by sight individually. To test if the fuse is blown, connect the ground wire of your test light or voltmeter to a chassis point, one with exposed metal is a good choice. Then touch the tool's probe to the fuse's conductor.
A working fuse will show voltage power on both sides. Obviously the faulty culprit fuse will be missing its charge on one side. Fortunately changing the fuse involves removing the bad one and plugging in a new fuse.
Pay attention here. Make sure the fuse you are using to replace the bad one is the correct amp. If you use a fuse with too high amperage it is possible to start an electrical fire in your vehicle and do more damage than a simple blown fuse is worth.
Fuses typically come in three sizes, mini, normal, and maxi. The fuses that are mini and normal are color-coded. The wrench thrown in is that the maxi sized fuses are color-coded differently.
This being the case it is imperative to check that the amperage on the fuse is correct for location. Don't even trust a trained mechanic, they make mistakes too. Just because that was the last fuse put in doesn't mean it was the right amperage.
Knowing how to change your car fuses and being prepared for the possibility is the perfect way to ensure that there won't be any late night blackouts. Sweetie will thank you for it.