I currently have my truck a 2013 Ram Power Wagon in shop. Recently purchased this PW and having bunch of issues. Was told by seller that transfer case is new. Shop said it's a new transfer case but has no tag. Their concern is there is a wire on it that has nothing going to it. Below is a picture. Can anyone tell me what that is. They think it may have the wrong transfer case on it. But would truck even run if it were the wrong transfer case? 

