Electric Component what’s this pictures, what does it do?

[TwistyTony]

Another wire puzzle.
The Yellow and Black here back by the water pump? Any idea where these go?
Somewhere there must be a water tank level sensor?
Maybe I should check the tank. We’re really under the gun getting Goldie ready for the trip home for Christmas, family funeral and migration south.

 

[RF_Burns]

Another wire puzzle.
The Yellow and Black here back by the water pump? Any idea where these go?
Somewhere there must be a water tank level sensor?
Maybe I should check the tank. We’re really under the gun getting Goldie ready for the trip home for Christmas, family funeral and migration south.

Wiring diagram for 77/78 models show a yellow wire going to the fresh water tank level sensor and a black wire to the sensor for ground. So yes I would say those go to your fresh water level sensor.