A car relay is an essential component of the electrical system in most vehicles, controlling high-current circuits through low-current switches. When a relay malfunctions, it can lead to electrical failures in systems such as the air conditioning, headlights, or even the engine. Therefore, it's crucial to know how to test a car relay with a multimeter to diagnose problems effectively.

    Testing a car relay with a multimeter is a straightforward process that requires attention to detail. In this article, we will walk you through the necessary steps to test a car relay with a multimeter, so you can identify any issues with your vehicle’s electrical system and take appropriate action.