What should you always do before working on a vehicle's electrical system?

Before working on a vehicle's electrical system, it is essential to disconnect the battery. This step is crucial for several reasons. First, disconnecting the battery prevents accidental electrical shorts while you work, which can damage sensitive electronic components or lead to sparks that could cause a fire hazard.

Additionally, it ensures that you won't accidentally trigger any circuits or systems that could pose a risk to you or the vehicle itself during diagnosis or repairs. By removing the power source, you create a safe working environment, allowing you to focus on the task at hand without the worry of unintended electrical engagement. Always prioritizing safety first underscores the importance of disconnection as a standard practice in automotive electrical work.