I bought a volt meter yesterday but after watching a couple of YouTube videos, I decided that it wasn’t for me. So I called a professional help yesterday (I asked for a recommendation from the campground I’m currently staying at). I wasn’t expecting anyone to come out until today but they came over last night to diagnose. The conclusion is that it’s not electrical but it’s the water pump that is going bad. He was able to make the pump work by messing with it (as in wiggling the wire and such), but it only lasted for a few min. He also said it was really loud as in it’s on its last leg and I thought that it was normal! He couldn’t get the part last night so I am waiting on him to come back to install a new pump today. I can also make the pump to work for a couple of min by wiggling the unit. I should have a new pump by this afternoon!
BTW, to answer John's question, yes, the photo is what was behind the white panel and there is nothing above the panel area, just the ceiling. And thank you Kirk for the fuse photo! It maybe under the breaker panel area and there is a small opening to see inside but there are so many wires in there.
Thanks again for all your help!!! You guys have been so helpful!