Black Toggle Switch on Citation 24ST?

[Citation Chap]

Hello,

Our 2017 Citation has a black toggle switch near the cable TV hook-up. It is in the bay with the water hook-ups & the power cord.

Flipping it on/off does not appear to do anything.

Anyone know what this is for or what it should do?

Thanks!

[Hooligan2]

It's the water pump switch to use the outside shower. Don't have to go inside to turn the pump on. Probably don't hear anything because your inside switch is on (pump pressurized)