Tank sensor wiring destroyed by rodents. Need a little help with parts I need.

[showme]

We have a 2000 Keystone Montana 36' 5th wheel that we've owned for about 5 years and have it parked on our land in southeast Missouri. It was gone over by a trailer sales place and most everything passed inspection. We use it mainly for a break room when working on the property so far, plus store some power tools in it. After getting our solar set up and our well drilled, we hooked up the electric and filled the fresh water tank. Our well temporarily runs on it's own set of solar panels with no pressure switch or pressure tank, so we turn it on when needed, so we don't use the city water hook up since the pump works continuously when the breaker/controller is on.
So after building a small septic system for it last spring (which will eventually be for the greenhouse bathroom for my wife's garden), I got the 5er hooked up to that and it's working well. My problem is with the tank sensors. When I was installing a new fill hose to the freshwater tank, the sensors on the tank were visible, but had no wires connected to them. The sensor panel was showing no lights on any tank, so I assumed they were all empty (before filling the water tank). After filling, of course, they were still showing nothing, since they had no wires connected to them. So yesterday, I dropped one of the panels to check things out, and the mice or rats have done a number on the main control bundle (blue/gray/brown/white wire) , and the red distribution junction of the actual sensor wires

It looks like I'll need to replace the main control wire from the last damaged section and the red junction units to the tank sensors.
I'm wondering if anyone has had to tackle this job before, and if so, could give me any tips on do's and don'ts on this problem. Although I haven't done a search for these parts, I don't even know what the red things are called, so if anyone can educate me on the terminology or where to get them, I would really appreciate it. Thanks in advance for any help, ideas or comments. Lee

 

[Kirk]

If you have the typical RV tank level indications, they are connected something like this:

There is a negative tank probe installed at the bottom of the tank in the empty position. The remaining tank sensors are positive. As the content in the tank rises and makes contact with one of the positive tank sensors it completes the circuit which in turn illuminates that tank level reading at the monitor panel.

 

[John From Detroit]

That is close; On my RV there were just two leads from the display board One ran to the lowest sensor the other to a blob of plastic which I beieve had resistors in it. 3 more leads came from, there to the sensors which are basically nails (non electronic) unless they destroyed the plastic "Blob" All you need to do is splice in new wire.

Oh to identify the blob to tank leads. Jumper lead to bottom "Sensor" and note reading.. If it shows full that's the top sensor 2/3 the next one down 1/3 the one below that.. Rather easy.

 

[Kirk]

the other to a blob of plastic which I beieve had resistors in it. 3 more leads came from, there to the sensors which are basically nails (non electronic) unless they destroyed the plastic "Blob" All you need to do is splice in new wire.

You probably then have this type of system:

I would likely look something like this:

 

[showme]

Thanks, Kirk and John! Yes, mine is like the one Kirk describes. I found the red connectors and the bonded 4 wire on amazon and have already ordered the red connectors, but I'm sending them back. I had posted on the Montana forum, too, and a couple of people told me about the Mopeka Pro system, so I'm going to forego the re-wiring job and install those, or at least one for the freshwater tank, anyway. They're bluetooth and can be accessed by my phone, and also are mounted on the bottom of the tank, which will make it easier to get to. And I won't have to worry about critters chewing the lines anymore. The 5th wheel will stay on our 43 acres in the woods for at least a few years, so not having to worry about those wires, at least, will be a plus.