Fresh water tank monitor wiring question

[dbn1164]

I recently purchased a 2009 trail lite hybrid and the fresh water tank monitor goes from full (all lights lit) and after use it goes to no lights at all. I looked at the wiring and this what I found. I have 4 sensors, the top sensor is about an inch from the top of the tank and has the power wire running to it. The next two sensors are about an inch from the bottom of the tank and and the fourth sensor is about a half an inch from the bottom of the tank all three wires of these sensors are run into a resistor along with a ground wire running from the lowest sensor.I'm thinking that it may have been wired wrong from the factory.I am wondering if I swap the power wire with one of the middle sensors I would get more of an accurate reading. What do you think?

[markchengr]

These sensors as supplied by the manufacturers are so notoriously unreliable that I don't think I've even looked at mine for several years.

[Old-Biscuit]

Top 3 highest mounted sensors are typically:

TOP----FULL
MID----2/3
LOW----1/3

Bottom sensor is ground for ALL 3 sensors.


Here is a typical tank monitoring system wiring with standard 'stud' sensors

[midnightsadie]

these sensors get limed up with stuff in our water, most of them are not very accurate. to the best of my no how,theres no way to take them out and clean.