Using the winter to catch up on the stuff that does not have a priority during the summer. The tank gauges have given me many inaccurate readings. I decided to get something better than lights indicating with "Full - 2/3 full - 1/3 and empty." I installed a "tank Tender" gauge for the water and waste tanks. Got to say this is the way to go. I can now determine the amounts in both tanks to and accuracy of 1 gallon. Great to know with such accuracy. Easy to install.