As technology advances, more electrical components are being
added to vehicles, from safety features to entertainment
upgrades. More devices means plenty of wires and complicated
arrangements to keep everything in line and working properly. It
is not as simple as running the wires from each part to one
power source, and there are a variety of methods for
distributing power and ensuring that it gets there without
issue. Many parts of the car, including the alternator, starter,
radio, power seats, sunroof, and windshield wipers relies on
electricity to work properly. The wires and switches that
connect these devices are called circuits. When the car is
running, electricity is sent from the engine to the circuits to
power the many different tools that drivers rely on. In order
for these components to work, the correct amount of electricity
is needed, and some devices need more juice than others. Power
seats and windows will take more to run than an interior light,
for example. In most cases, switches are used to