Something that will block off the sun, like a shadow or foil or something like when the Hats the we wear that make shadow for the eyes!
Because sun can not be direct across the cluster, its allways gonna be above the cluster, and the angle how it sits on the frame looks like that, something small enough to cover the indicator.
2013 Suzuki Hayabusa Limited Edition
Gone, but not forgotten,
2008 Honda CBR1000RR