Hello again,
So what needs to happen here to get your vehicle fixed is to fix the root problem which is you have got some wiring damage somewhere that is causing all of these fuses to blow. A fuse blows because of a short to ground somewhere in the circuit that it is protecting. Here is how it works. Every electrical circuit in your vehicle is intended to provide a component (load) with voltage to power it and is protected with a fuse. Automobile electricity has three parts to it, and a good way to think about it is to think of electricity as you think of water. They are very similar in the way they act. Part 1)Voltage(Electrical Pressure-Like PSI in a pipe), Part 2 Amperage/Current (electrical flow-Like the flow of water), and Part 3 Resistance (anything that opposes the amperage). The law that dictates electricity, Ohm's law states that if one of the three properties is constant, in automotive electricity there is always one (12VDC) battery voltage, then if one of the other properties goes up then the last property must go down. So what happens in a short to ground is somewhere in the electrical circuit, before the load, a part of the circuit is making metal to metal contact with the vehicle body, or ground. The whole vehicle body is connected back to the batteries negative terminal and is grounded. So with no load to dump all of the circuits available voltage across it returns to the battery, but as there is now zero Resistance, the amperage goes to infinity. As the amperage (amps) passes the amperage rating of the fuse it melts"pop" and creates an open in the circuit just as it is supposed to.
To properly fix your vehicle you must find out where the short to grounds are and fix them. Is there any way you can make a list of the affected systems. You mentioned that there is damage to a fuse box and I suspect that this might be your problem.
Thanks,
Alex
2CarPros
Monday, April 8th, 2019 AT 3:59 PM
