I'm going to re-do the ignition switch circuitry in the car. In looking through the FSM for the key switch workings, I noticed that it shows the ACC circuit is disconnected when the key is rotated to the start position. The ON circuit is still connected. What's the reason for this? Is it so that all the stuff on the ACC circuit isn't drawing power while the starter is being powered? Or some other reason?

My plan was to have a toggle switch for the ACC circuit and one for the ON circuit. Can the ACC circuit be on when the starter is engaged?

Thanks.

David