Q: How are the electrical circuits of a Nissan Murano safeguarded and what should be considered when replacing fuses?A: The protection of electrical circuits of the vehicle in question is provided by fuses, circuit breakers and fusible links; The main fuse/relay panel is located in the engine compartment along the left side, while the interior fuse/relay panel is located inside the passenger compartment at the left side of the instrument panel. All sorts of fuse dimensions are present in the fuse blocks, small, medium, and large, and they all have the same blade terminal type; whereas, medium and large fuses can be easily pulled out by bare hands, the same is not possible with small fuses and they have to be pulled with the help of pliers, or, preferably, a plastic fuse puller. When an electrical part does not work, the first thing that has to be checked is the fuse; using a test light to probe for a power source at the terminal ends will reveal a fuse that is blown and the element of which can be seen with a naked eye if melted. In this case, it is necessary to reinstall the proper type of the fuses, as it is inadvisable to replace them with the fuses of the other rating, even if they have the same appearance and dimensions because each circuit is protected with the fuses of a certain type. When a replaced fuse goes out at once, it would highly probable that the precise problem is a short circuit attributable to faulty wiring and this should be corrected. Also, some circuits are protected by fusible links, including the ones that do not have fusable links, or those that must have high current, like the connection between the alternator and starter motor. A fusible link in an engine compartment fuse/relay box looks like a large fuse and should be replaced with a link of the same amperage; if a fusible link has been blown out, then troubleshooting of the circuit is required before one can inscribe a new link.