They are under the curved skirting that runs along the lower edge of the trailer right at the spot where the decal says they are. You must lie on your back and schooch under the trailer to see them.
For this reason, I added two valves to the hose ends. Now I can reach under and operate them without needing to get under the trailer.
Wright and Penny
2010 Tundra 4X4 5.7L V8
2014 Rockwood 2604WS
Life is a cruel teacher. She gives the test first; the lesson then follows.