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Old 07-11-2015, 10:34 PM   #1
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Tank sensors on all my tanks don't work

I recently got a 1988 Fleetwood Southwind. As I get it more and more ready for operation, I have found that the tank sensors don't work. In the tank compartment, I see stickers with wires on the outside of the tanks (gray and black, as an example) and then the wires are all just bundled up in that compartment)

I am thinking that if I need to replace the sensors, I may just upgrade the whole control center (it is located in the stove hood, and is also pretty old)

I would love to hear ideas on what products people have found convenient, or other ideas from those who used to be in my situation, and have moved to a better one.
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Old 07-12-2015, 07:56 AM   #2
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Sorry, not following. The wires are installed on the tank sensors, but the harness forward has been cut?

Does the panel have power? Thinking the "E" light should come on even if the tank sensor wires were not connected, but could be wrong there. Bottom wire on each tank is the hot one. The others (above that wire) can all be tested individually by shorting to the bottom wire, directly or by using a short jumper. For instance, if you were to take the top wire and short it to the bottom, you should get a an "F/Full" indication on your panel when you push the button for that tank.

Bottom line, the tank readings gained through these panels is "iffy" at best, especially on the black and grey tanks. Attention here would be pretty low on my list....

Best of luck, -Al
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Old 07-12-2015, 11:07 AM   #3
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I've never owned an RV that had sensors that worked reliably, nor do i waste time to get them right. If you use your rig a lot you will probably get to know when it's time to dump.
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Old 07-12-2015, 11:10 AM   #4
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The only sensor that has worked reliably is the fresh water in all of our units. I don't bother with them anymore and for me, I wouldn't even spend the money to fix them.
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Old 07-12-2015, 06:49 PM   #5
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If your panel has power when you push the test button the E light will light even if your wires are not connected, when you go to your sensors there are four wires, with two towards the bottom, one of them should be white that is a ground, that wire will be separate from the "bundle" of wires, check that you have a good ground first. then you can check to see if your sensors are gummed up by taking a wire from each sensor to ground and see if your lights light up, this may require two people, as you hold the wires someone has to push the test button. if it passes this test then replace your sensors. I personally like the sensors to work as it gives an indication of when to dump. I just installed a complete system on my 5TH wheel.
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Old 07-14-2015, 01:28 PM   #6
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Try checking all of the connections at the display panel,I had the same issue with some of my displays not working and found some loose connections at the switches on my Fleetwood.
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