Assuming standard color conventions, i.e., black is hot (line), white is neutral, and green is ground, here’s what you’d do:
- Check continuity of the terminals (input to output) with the switch in the energized/on position to figure out which input terminal is connected to which output terminal.
- Inputs:
- Wire black to the input terminal connected to "1"
- Wire white to the input terminal connected to "2"
- Wire green to the input terminal connected to "3"
- Outputs:
- Wire black to "1"
- Wire black to "2"
- Wire black to "3"
