There shouldn't be a mud hole. There's something wrong with the pipe or there's something wrong with the valve. It's not a wiring problem.
I'm not sure what valve you mean. The master valve or a zone control valve.
Each zone has a valve, but they are not in a central box. Where this boxes are at...I have no idea.
I may need to rent a tool to find them that I've seen on a website. But, what I don't understand is why ALL zones try to come on at the same time if there's not a short across all the control wires and they are all making a short circuit through wet ground. (The mudhole is because we got about 2" of rain after 5 months of drought.)
I appreciate all the guidance received.