Further winterizing mysteries
I have these two lines poking out the rear left of the trailer, right where the grey and black tanks are. There is another blue line in the middle on the right side (where presumably the fresh water tank is). I opened the blue line in the middle to empty the fresh water tank.
Do I need to open these two lines at the rear for winterizing as well?
Also, what kind of hex nut do I need for the drain plug on a suburban heater? 1" wasn't enough.