What should be the brightness of the instrument lights during darkness?

During darkness, the ideal brightness of the instrument lights should be dim. This is important because overly bright lights can cause glare, which may impair a driver's ability to see outside the vehicle, potentially creating dangerous situations. Dim lighting helps maintain the driver's night vision while allowing them to still monitor important gauges and instruments inside the ambulance. This balance is crucial for safe driving and effective patient care, especially in low-light conditions.