How do I reset my RV tank sensors? (video)
https://www.youtube.com/watch?v=wYJetxLMtsI
How do you clean a holding tank sensor? (video)
https://www.youtube.com/watch?v=xJRvK6rU_-k
How do I clean the grey tank sensor on my RV? (video)
https://www.youtube.com/watch?v=gmdzFpdB--c