I just bought a '98 GT Convertible where the previous owner replaced the convertible top and put in a rear window with defroster. What I wonder is, how difficult it is to add this option? I went to the salvage yard and picked up a button. With many of the options I've added to my Ram 1500 the wiring and plugs are already place. I just wonder if this doable. I've searched the forum and don't see this topic discussed. This is my first post so please cut me some slack if I missed one.