topshelf, I am not sure exactly what you are asking. You indicated in previous posts that you have a home made camper. What exactly are you trying to find out ?? A better explanation would be good.
BTW, I merged your 2 threads....starting the same thread in 2 different forums is not needed.
Chap , DW Joy, and Fur Baby Sango
2017 F350 Lariat CCSB, SRW, 4x4, 6.7 PS
2017 Grand Design Reflection 337RLS