Would the ignition switch control the dash lights?

Answer 1

It sends a power to the starter relay/solenoid to engauge the starter. Know that the ignition switch is not what you put the key in and turn. That is the lock assembly. The ignition switch is located lower down on the steering column.

Answer 2

With most vehicles you can turn on the parking lights or the headlights and the dash illumination lights light up without turning on the ignition switch.