Glad you got it figured out! There's a lot to remember with an RV, especially if you just started --OR-- don't use it often.
Seems very inconsistent, which builders/models use ATS and which use the Outlet Method. I consider Winnebago to be a higher line product than Jayco, yet our entry level Jayco has an ATS. Benefits/Drawbacks
ATS - Convenience/Mechanical Failure Point, Troubleshooting Difficult
Outlet - Simple, Reliable, Simplifies Troubleshooting/Inconvenient, Forgettable
This is a checklist item you won't forget again! But there'll be more. Happy Camping!