C208 PFD and MFD very dull

I am having an issue as the title says. Both displays are very dull even though set at 100% brightness.
Can anybody give some insight on how to rectify.
I have the C208 improvement mod installed but, even with it removed both displays are still dull.
Assistance appreciated.

Sometimes people are dum. In this case it’s me.
There’s a thing called a dimmer knob and I had it turned all the way down (slaps self on forehead with open hand).