Not really sure where it might be in your TT but it is usually located next to the inlet into the trailer...probably in a closet or somewhere that you will have to remove some screws to access it...Hope this helps!
__________________
2016 Dodge Ram Dually 4X4 Quad cab LB 3500 Cummins 6.7L TD / 2013 Columbus 320rs. Camped 92 days in 2017, 94 days in 2018, 108 days in 2019 and 112 days in 2020.
Try this.
1) Open both sides of the pass-through in the rear of the trailer.
2) There is a removable panel on the forward side of the pass-through. It is secured to the floor with 3-4 all purpose screws.
3) Remove the screws and the panel.
4) From the driver's side, look in through the pass-through hatch.
5) Use care! The water filter and water pump will bite you.
__________________ Happy Camping! ///// Richard D.
2006 4x4 Ford 250 SD / 2007 Flagstaff 827 FLS
One very patient wife and one furry child who travels with us. Forty-two years of trailering and camping, and I still have a blast.