They are under the lower bunk behind a screwed on panel at the rear of the compartment. These will be for bypassing the water heater. The winterizing feed valve and FW tank shutoff valves are at the water pump under the kitchen sink.
We just got ours about a month ago. It's a great layout. Congrats.
2015 Chevy Silverado LT Z71 CC 5'8" 5.3L 3.42 Rainforest Green Metallic
2016 Jayco Jay Flight 27BHS Elite