Originally Posted by JRTJH
This photo is representative of the most popular city water inlet, but it sounds like yours may be different (with the outside shower incorporated). Possibly a photo of your actual component would help people identify what you're looking for.
Here is a exterior shot.
For some reason, I am reluctant to take interior pics until spring. However, you are correct. This unit contains the outside shower, fresh tank fill, sat/cable, black tank flush connection as well.