Freightliner m2 instrument cluster lights not working

hello, was wondering if someone could help me, I’m working on a 2005 freightliner m2, the issue is the dash lights don’t work on it, other than that everything on the dash works, I have checked all the fuses, opened up the dash, tried to find where power went missing. But I can’t find anything, could use some help on this issue thank you.