broker wires

This is our 5th year of podding. This last weekend we were camping in Minnesota with our grandchildren. Lost of bathroom activity. When we were at the dump station I noticed some wires hanging down by the black water discharge. I got down and looked at it and noticed 4 wires that were clamped in a yellow plastic thingy. They are red, yellow, green and blue. We never noticed these wires before. The yellow wire is broken off at the clamp. The red wire is broken part way to where it is connecedt to the bottom of the camper. What are these wires for? I am assuming it has something to do the the tank level indicators. We used the toilet all weekend and the indicator said it was empty. I am thinking we should just ignore these wires since everything else in the camper was working just fine.