I am having same problem in my Gulfstream. I did find a fuse for visor in the compartment with all the fuses (Mine being front compartment on driver's side), but it was not blown. Guess we both have to do some power chasing. Good luck. Be interested in knowing whgat you find.
competitive shooter RVer
2006 Gulfstream Friendship G7 8411 400HP Cum.
RM Sterling/'07 Chevy Colorado CrewCab 4x4