Old Steam Furnace

I have a old steam furnace that is running fine now but it’s not hooked up to the switch or the transformer.

I have a brown wire (cable with brown insulation) containing a red and a white wire coming from the switch in the ceiling and a brown wire (cable with brown insulation) containing a red and a white wire coming from the thermostat.

I have 4 places to put wires in the LLWCO and an auto-water feeder.

Any help with this wiring?

Thanks