For 2nd floor street lights, pick up the pillar from the 1st floor, build stairs to go up to the 2nd floor, and then pick up the light fixture.
To place them, install the pillar on the 1st floor, build stairs to go to the 2nd floor, place a wooden floor directly above the pillar, install the light fixture, and then disassemble or destroy the wooden floor.
Only street lights that have been picked up and placed back at least once can be turned on and off manually.
Enabling the "Auto Turn On/Off Street Lights" option in Sandbox settings will automatically turn them on at night and off in the morning.
When enabled, street lights will work outdoors before power shutoff. When disabled, they only function indoors or within generator range.
It is recommended to keep this option enabled before power shutoff and disabled after power shutoff.