Final answer:
The propulsion fault light mentioned in the question does not correspond to standard vehicle indicators, but the underlying concept involves electrical resistance and power distribution within a vehicle's electrical system.
Step-by-step explanation:
The question relates to a scenario where a propulsion fault light is mentioned, which doesn't directly relate to typical car warning lights. However, we can address the concepts involved by drawing on a similar phenomenon of power distribution and electrical resistance. When engaging a high-power device, such as starting the engine of a car or when the motor of a refrigerator starts up, there can be a momentary dimming of other lights on the same power circuit. This dimming occurs due to a temporary drop in available current as the initial surge of power is drawn by the high-power device. In the context of an automobile, this phenomenon can be witnessed in the passenger compartment light, which may dim upon starting the engine.
The dimming effect can be attributed to the resistance inside the battery or the power system that leads to a momentary voltage drop when a significant load is applied. Identifying the underlying principles of what affects the brightness of lights can provide valuable insight into electrical systems, both in domestic appliances like refrigerators and vehicles' electrical components.