Hello All. I am confident that this post has been covered but I did do a search. I promise. So we purchased a series 80 for my son and it has been a project. Our last true need right now, is the heater. I have read plenty of posts about the delete for the rear, but we have zero heat or defrost. If blows and the fan works but no heat at all. Not even up front. I noticed that the control box the hoses goes through is not even installed. Can someone direct me to what that box is called. I think I understand the hose layout a little bit but I do have a friend who has one of these trucks so we can at least go look at his. That said I have heard there is an aftermarket Dodge maybe hose rebuild kit folks have been using at a more reasonable price. Any pointers would be deeply appreciated. My kid is cold!!