How can you quickly ascertain the condition of the brake lights?

To quickly ascertain the condition of the brake lights, activating the brakes and visually inspecting them with an assistant is an effective method. This approach allows you to confirm that the brake lights are functioning correctly in real-time. When the brake pedal is pressed, the assistant can observe whether all brake lights illuminate as expected. This direct observation provides immediate feedback on their condition and helps identify issues like burned-out bulbs or electrical problems that may be preventing the lights from operating.

While testing with a multimeter can provide detailed information about the electrical circuits and checking the fuse can identify issues related to power supply, these methods typically require more time and technical knowledge. Inspecting brake fluid levels is not relevant in this context since brake lights do not operate on fluid. Thus, the best way to quickly check the brake lights is through direct activation and visual inspection.