Modern vehicles rely on increasingly complex electrical systems to power everything from headlights and windows to engine management and safety features. These systems are protected by an intricate network of fuses and relays working in tandem. While fuses directly prevent damage from overcurrent, relays act as electrically controlled switches, enabling low-current circuits to control high-current devices. Understanding the relationship between these components is crucial for diagnosing and maintaining your car's electrical health. They both serve as vital components in a car's electrical system, ensuring safe and efficient operation. Fuses: The First Line of Defense Fuses are designed to be sacrificial...