Zetecfiesta

just been looking at my turbo and my heated rear screen has never worked now i believe that its the large grey relay in the fuse box? but mine has 2, is that right? if not which one is suposed to be there? also ive got intermitent wipers which dont work now this is a large red relay but where is that one suposed to be? i had a quick look under bonnet but it was dark so any clues please!!