I assume your asking how to protect the tanks during winter since your going to live in it full time in cold weather? They are located under the RV likely under the rear overhang - find the outlet pipe on the drivers side - it connects to two other pipes - the large diameter pipe connects to the black water tank and the smaller diameter pipe connects to the gray water tank.
Unless the rig came with the winterized package you will likely have to provide heat/insulation to these tanks if your going to be living in the rig during cold weather.
Edit. My 92 Jamboree came with an outside shower (rear passenger side cargo compartment) - it was source of constant leaks and would be tough to keep from freezing during the winter. I removed mine and capped off the line - something you should consider.
