The city water is for when you are at a campground and have water service available. The other bib is to fill your onboard tank. You may also have a black water fill for cleaning your black tank. DO NOT FILL THAT. I would suggest before you take your first trip to read the manual thoroughly. Also, take it with you so you can refer to it as needed.
2016 Minnie Winnie 25B (No Toad - Rad eBikes)
2006 Gulfstream Ultra Super C
2004 Fleetwood Prowler AX6 38' 5ver