How Wires, Fuses, and Connectors Work

By: Karim Nice
Car wires, fuses and connectors
Ever popped a fuse? We explain how these automotive electrical pieces work. Photo by Tanvir Ibna Shafi / Getty Images

The mundane-sounding components of wires, fuses and connectors are found in every electrical device, and especially in cars. Many of the features we have come to expect in our cars are possible because of these elements, and their reliability has improved immensely in the last couple of years.

Along with increased reliability, the complexity of car wiring systems has increased dramatically. Cars now have literally thousands of circuits. In this article, we'll go through some of the key components in your car's wiring, starting with the wire itself. Then we'll discuss fuses and connectors and see how it all fits together.