I am going to winterize my 5th wheeler this week. I have read quite a bit on it and think I know the process an am going to use the pink antifreeze. I have a 2012 Keystone Raptor 3912 LEV. Can anyone tell me exactly where the hot water heater bypass is located on this model? I want to make sure I run the antifreeze correctly. The owners manual is generic formultiple keystone models.