Hello I will help you with your question,
I don't know how much this will help but I see you posted your question some time ago and do not have an answer yet.
These are the diagrams that I have available and it does show the location of two of the hoses to the water valve
Here are the three hoses you see coming from the firewall
The Aux outlet hose is shown here
Let me know if this is enough for you. If it is not I will OPT OUT in the hope that another expert can be of assistance to you. Just let me know what I should do
Here is the info for the first diagram
I am unsure what you mean by the "actual control valve" Do you mean the control head in the dash?