Do yourself a favor and purchase the following tank sensors.
Valterra T21301VP Horst Miracle Probe - Black Water Tanks, Pack of 4
Valterra T21302VP Horst Miracle Probe - Gray or fresh Water Tanks, Pack of 4
I installed these on my Travel Trailer and just installed them on my new Thor Hurricane 34j. Just drill new holes and move the wires. You will be very happy with these.
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