Protection of electrical circuits of the vehicle is done by means of fuses and circuit breakers; fuse blocks include those located under the instrument panel and on the left side of the engine compartment; the interior fuse block is situated in the driver's side kick panel on early models and behind a panel at the left of the dashboard on later models, while the power distribution box is near the battery and contains cartridge type fusible links, miniaturized fuses Individual fuses are set to safeguard a given circuit and there is a label of the different circuits on the cover of the fuse panel. Self-indication mini fuses with finger-blade terminal for easy disposable should be the first checked when an electrical part has a problem; for this, switch on the key, use a test light after grounding each exposed terminal of the fuses. If there is light on both terminals, the fuse is considered good but if there is light on only one side, then, the fuse is considered a blown fuse and replacing it is quite easy because the fuse comes in a clear plastic case and one can determine whether the element has been damaged or not by merely having a look at it. One should always ensure that the fuses are replaced with the right type because although physically, fuses of different ratings look different, fuses of different ratings are interchangeable but only the right one should be placed in circuits to provide the correct protection to each electrical circuit identified by the amperage value molded into the case of the fuse. A fuse must always be replaced if it blew within a short time and the cause of the failure this time must be sought typically due to short circuit from a faulty or wore out wire. All have a master fuse that protects all circuits from the battery; in the event of overload, the fuse blows to protect the main wiring harness; it is a metal strip which visibly melts when overloaded. For the main fuse which is in the engine compartment fuse box, always remove the battery before replacing it and the fuse that is placed should not have any switches in the amperage ratings from that of the old fuse until then, keep the replacement fuse below the existing amperage rating.