Hogcowboy,the back rest on a tour pack is the tour pack itself. Then there is just a pad attached to the lidin the older models,in the newer model, at least on my 2012, the pad is attached to the tour pac itself and doesn't lift up with the lid anymore, Here is a link for just the pad and which attachs to the tour pac directly:
https://www.harley-davidson.com/gma/gma_ ... cale=en_USThis is as good as I've ever seen. There might be something else availabale but I'm not aware of it. The bigger black piece that always seems to come with arm rest...well I've never seen that with out the arm rest. Notice how on the electraglide classic yuo see the armrest but without speaker,always with the arm rest though.