Water/water pump issues

[Jeff]

We are trying to get ready for our maiden voyage in our camper and are trying to figure out the water. We filled up the tank with water and tried running the pump. no pressure. We figured out the hose under the sink for winterization was open, so we closed it. Immediately we started getting water coming out of the outside back end of the camper out of two white tubes. These tubes have no on/off knob. When we shut off the pump, it stops running. We thought maybe we over filled it and it just needed to let some water out, but it is now down two 2/3 and still not stopping.

Ideas??

[norty1]

Those appear to be your low point drains. directly above them inside there should be 2 valves. If turning them does not stop it then pushs them down gently on top till they snap closed. There are 2 types that are commonly used.

[Jeff]

Got it! Thanks!
Had to crawl into the bunk bed storage to get to it. Figured out that this location also is how we would either bipass or have water going to the water heater.
Thank you!