Teaching automobile electricity to beginners. We are following a series explaining and clarifying the functions and names of relays and fuses for cars. In the episode, there is an explanation and clarification of the functions and names of relays and fuses in the main box of the Chevrolet Optra car. A simple explanation for beginners. Through the explanation, you will learn about the parts of the fuse boxes and relays and the locations of these parts, which makes it easier for you to find a solution. Quick fix for car breakdowns. I hope this link is useful.