Can vehicle electrical appliances be used when the ignition switch is in the ON position?

[May]

The ignition switch in the ON position means that all basic equipment except the starter is functioning normally. If the key is also in the ON position, all components of the vehicle are powered, including the engine system. The dashboard lights will illuminate, and the fuel pump will start building oil pressure. After approximately 5 to 10 seconds, when the fuel pump has fully established oil pressure and the dashboard needle returns to its original position, pressing the start switch will start the vehicle. Meanings of other positions of the ignition switch: LOCK is for locking the car. Generally, placing the key in this position locks the steering wheel, preventing significant movement. ACC powers the entire vehicle, allowing the radio, lights, etc., to function normally, but the air conditioning cannot be used. Control process of the vehicle's ignition switch: When the ignition switch is in the "OFF" position, turning the key to the "OFF" (shut) position connects the two internal contact points in the horizontal position, thereby connecting the external wires "black-white wire" and "green wire." If measured with an ohmmeter (Ω), these two wires should show continuity. In an actual vehicle, the connection of these two wires indicates that the entire circuit system stops working, the ignition system circuit is in a short-circuit state, and the engine shuts off.