On my 3210 (as you look at the handles) left one is Gray. To be sure, suggest closing both valves and running water in your kitchen sink. Pull one of the handles and when your water drains out you'll know for sure which handle controls the gray tank. I painted my gray water handle silver so there is no confusion. I do suffer from CRS at times!
You may have another gray valve handle for a rear gray tank (hatch is right behind last tire) used for your washer/dryer.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.