Follow the antifreeze plastic fill line away from the open end with your hand. You will see a 2 way valve to switch the input to the pump from the cold water tank to the antifreeze container after you immerse the open end of the plastic line in antifreeze. Make sure that the water pump's breaker is turned on and now antifreeze will be drawn into the pump and distributed throughout the system. Of course you need to have activated the correct 2 valves for the hot water bypass kit before you run the pump.
That's it; no need to actually see the water pump. Mine is actually hidden under the floor of the cupboard.
And yes, you will hear the water pump running and also see the pink antifreeze moving in the lines.
Cruiser CF31LK 2014; F-350 Crew Diesel SRW 2015