Checking out water system on my camper for first time

Checking out water system on my camper for first time I found several issues one when running shower found water was leaking into the passthru compartment and it wasn't from a water line apparently they installed the shower stall without silicone on the inside to the floor pan there wa about a 1/4 inch gap at the aluminum frame that was leaking water to the floor by the wall then running between wall and floor to the compartment would of been a real pain camping finding out. I resealed the floor pan and it is now fixed. also found the sink faucet was connected backward hot was cold and cold was hot there was just enough play in the lines to flip them back. I guess that the people who build them have to learn the difference from left-HOT right_COLD. That was the way I learned the difference.

Lots of us had the shower leak, I EVEN HAD IT IN MY NEW MONTANA!!!
I learned the hard way to fix it, I pulled my entire shower apart, until I saw the corners had no caulk.

But I don't remember ever reading about the hot/cold being backwards, that might be a first.....