Look at the dash cowl that shades the top of the guage cluster from below. You will see two torx screws at approx. 10 o'clock and 2 o'clock. These take a T15 torx bit. It is a tight fit and the easiest way to access them is with a torx bit socket and a small wratchet. These are the only thing holding the guage cluster in.
If you havent got a torx set you might aswell get one as all BM's use these, I have the sockets and screwdriver sets. Cheap sets are fine.
If your from the UK , screwfix do them.
VELVET BLUE UK INDIVIDUAL , IM THE LAST
UNITED WE STAND DIVIDED WE FALL
I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!