Sensors on Thor Windsport

[pumpkineater7]

Neophyte owner here. All my tanks, fresh, grey, and black stay on 0% on the control panel when I know that isn’t true. Anyone have a simple fix for that or something I should check? Thor Windsport 29M

[ArchHoagland]

Did they ever work since you've owned it and what year is your RV?

[enblethen]

Power and ground are only commonplace.
Remove display and check connections.
Some have a fuse on back of display panel.
Where is your monitoring panel located?
Any make on display panel.