Final answer:
True, you should dim your headlights when following a truck at night to prevent blinding the truck driver and to maintain your own visibility. The moon's brightness at night is not sufficient to cause blinding like headlights do. Electrical loads, such as refrigerator motors, can cause lights to dim due to increased demand, but this is unrelated to auto headlights.
Step-by-step explanation:
When following a truck at night, it is important to dim your headlights. This is true because bright headlights can reflect off the truck's mirrors and rear surface, which can be distracting or even blinding to the truck driver. It is always considered good practice and a matter of safety to dim your headlights when following any vehicle at night to prevent temporarily impairing the other driver's vision. Dimming headlights also helps maintain your own visibility of the road, as the glare from your headlights on the truck's surfaces can also affect your ability to see clearly.
Regarding the scenario of a car accident occurring at midnight on the night of a full moon, it is highly unlikely that the moon would cause significant blinding to a driver. The moon, even when full, is not bright enough to cause the same kind of temporary blindness that headlights or direct sunlight can. Thus, the police might be skeptical of such a claim without additional evidence.
In the context of electricity, when additional appliances are turned on, like the refrigerator motor, there can be a momentary dimming of lights due to increased electric load. However, this phenomenon is different from the reason you should dim your headlights when following another vehicle.