What is this fuse for? (Sorry, I don't have the fusebox cover)
 

Fuse box covers are shown the the FAQ thead at the beginning of this second generation site.

thanks.

OK i'm confused. That does look like any of the fuse blocks in my cars. They dont have the one you circled. Nor the "sideways" one.

Yeah, my car's wiring is a complete mess lol.

Yes. There's something very wrong here. Neither series four nor series five look like that. You have but four fuses across whereas the stk car has five across a row.

So There's no telling what any of those fuses are going to.