Nope. That's on galley . Thought it was to hot water tank. But not auto light.That's likely a safety cutoff switch that won't allow the interior lights to remain on unless the top is fully raised.
As far as the other wires (thermostat) when built the manufacturer will run standard cable harnesses in ea trailer and if an option is not installed that portion of the wiring will be unused.
Allows dealers/owners to add the items easily later. Sounds like your trailer did not come w a furnace