Where is the converter located on a 2006 Aerolite 19FL?

I just inherited a 2006 Aerolite 19FL travel trailer. The trailer does not have its house battery. I am not sure why my uncle removed it and I can't ask him (no longer with us). I will probably install dual batteries. Can someone tell me where the converter is located on my trailer? I just want to check to make sure the converter is working. Actually, I may want to replace it. I also have a class A so I have some experience doing this sort of work.