Pete 379 buzzer won't shut off

Did you ever get it fixed? What all was wrong with it?

 

So whatever happened? Did you get it fixed? What was the main problem? My Pete is doing the same thing. After the rain and being parked, started with my ignition. The buzzer wouldn’t shut off so I had to unhook the battery. Swapped the ignition switch and it fixed it. Then did it again after another huge storm. Started hearing that low air buzz and it goes off once I start it and build air. Soon as i cut power it just stays on. I turned my AC fan on and it just never went on. And the gauges quit for a second. And when I tap my brakes, every light on that dash panel goes on and back off when I release the pedal. Swapped out the ignition with another one and it didn’t fix the problem this time. I heard and read it’s likelt a ground cable somewhere on the firewall or frame or water got in the cab and trickled down to my fuse panel and could have corroded it and it’s going out. Any help and advice would be greatly appreciated and welcomed. And I wanna know what was the issue on the other guys truck who had the similar issue? Thank you.