Mercury D9AZ-14526-A Circuit Breaker Assembly

The electrical circuits of this vehicle are safeguarded by a combination of fuses, fusible links, and circuit breakers, with later models featuring two separate fuse blocks, the fuse panel, which can be found under the dash behind the access door in an area of left side of the steering column and the power distribution box is mounted in the engine compartment in the left side fender apron. The fuse block consists of miniature fuse units, each of which is easily insertable or removable, and each of which covers one or more circuits, though labeled on the cover of the fuse panel. If there is an electrical component failure, the fuse should be checked; the simplest way was found to be use of a test light which was connected between an exposed terminal point and another terminal, if the test light glows and at the same time, if power is felt at the exposed terminal tips, then the fuse is blown; this can also be ascertained by visual inspection. Fuses have to be pulled out and inserted vertically so as not to twist the terminals; moreover, blown fuses should be replaced with the fuse of the correct type and the correct amperage as using the wrong fuse is dangerous due to the protection characteristics of each circuit. The amperage value is usually printed on the fuse body as a red strip and it is unsafe to replace a fuse while the car is on and with any electrical system on; it is extremely dangerous to bypass a fuse with metal or foil. If the fuse blows as soon as it is replaced, a fuse should not be put back in until the problem, commonly a short circuit resulting from cracked or otherwise damaged wire, is fixed.

The electrical circuits of this vehicle are safeguarded by a combination of fuses, fusible links, and circuit breakers, with later models featuring two separate fuse blocks, the fuse panel, which can be found under the dash behind the access door in an area of left side of the steering column and the power distribution box is mounted in the engine compartment in the left side fender apron. The fuse block consists of miniature fuse units, each of which is easily insertable or removable, and each of which covers one or more circuits, though labeled on the cover of the fuse panel. If there is an electrical component failure, the fuse should be checked; the simplest way was found to be use of a test light which was connected between an exposed terminal point and another terminal, if the test light glows and at the same time, if power is felt at the exposed terminal tips, then the fuse is blown; this can also be ascertained by visual inspection. Fuses have to be pulled out and inserted vertically so as not to twist the terminals; moreover, blown fuses should be replaced with the fuse of the correct type and the correct amperage as using the wrong fuse is dangerous due to the protection characteristics of each circuit. The amperage value is usually printed on the fuse body as a red strip and it is unsafe to replace a fuse while the car is on and with any electrical system on; it is extremely dangerous to bypass a fuse with metal or foil. If the fuse blows as soon as it is replaced, a fuse should not be put back in until the problem, commonly a short circuit resulting from cracked or otherwise damaged wire, is fixed.

Circuit protection is through fuses and fusible links supplemented by circuit breakers, which is located beneath the left end of the dashboard. Two types of fuses are utilized based on the date of manufacture: first version of the fuses come in a glass tube design that enables users to check the inside metal component, later models come in miniature fuses with blade terminal that can be removed or refitted with fingertips. When an electrical component is not working, the first process is checking the fuse since one that has blown has its element between the terminals melted and is therefore different from a working fuse. To test the fuses the ignition key should be switched on and a test light can be used by connecting one end of the test light to the earth and the other end to the exposed terminal end of the fuses; the test light should turn on if the fuses are okay. Circuit protection requires the use of correct type and accurate amp rating and that is why one should not replace a blown fuse with a higher or even a lower value. The amperage value is normally printed on the body of the fuse, and the different colours are used to mean different types of amperages. Caution is necessary: before a fuse can be replaced all electrical components and the ignition switch must be turned off and it is fatal to replace a fuse with metal or foil since one risks a fire outbreak or severe blows to the electrical system. If a replacement fuse fails shortly after it has been replaced, it's advisable not to replace it again until one is sure that the problem that caused the quick failure-for instance a short circuit-had been addressed.