Depending on the vehicle make and model, your fuse box will be located below the dashboard or within the engine compartment. All drivers of a vehicle should be familiar with its location. Your vehicle’s owner’s manual will locate the fuse box for you and provide a map of which fuses control which electrical components.
Some fuse boxes have a removable cover with a few screws or clips. Others have exposed fuses. In either case, determine which fuse is bad, pinch it and pull it straight out to remove it. The new fuse slides back in till secure.
Once the old fuse is removed, if you have good vision, you may be able to see if it is broken or not. Within the clear plastic coating you will see a metal wire or thin bar. When a fuse blows, that bar will be broken. Most times it is visibly broken, but it may only have a pinpoint break that is not easily detectable.
Blown fuses should be a rare occurrence in your car. If you find that fuses are blowing regularly, this may be an indication of a larger electrical problem in your car. Take your car to a mechanic for a thorough inspection.
source: http://motoristpassion.blogspot.com/search?updated-max=2011-08-22T19%3A19%3A00-07%3A00&max-results=1
