Today’s modern vehicles have become extremely complex, the need for skilled and trained automotive technicians has increased drastically in the most recent years. One of the biggest challenges that the automotive industry has faced is that many technicians new and sometimes those with some experience have difficulties interpreting electrical wiring diagrams, understanding how the circuits work and how to test them. As an electrical technician it is important to understand the fundamentals of electrical as well as electrical diagrams to successfully test and repair circuits. In this learning solution, I will demonstrate as well as elaborate how an electrical diagram is laid out, what to look for, what certain descriptions mean in a circuit, how to read pin outs as well as how to locate important inline connectors that are related to the diagram that you are studying.