My dashboard light is very dim and maybe not on at all i have ajusted the switch both ways and makes no difference.
Probably the dimmer switch itself if there is no light or a dash fuse. All the lights in the dashboards dont all burn out at once .You would have at least part of the dash lit up .
The dash lights should turn on when you turn on the parking lights so see if they are working. If they are not working then check the fuse for those lights along with making sure power is getting to the fuse. If those things are good then you will need to check out the dash lighting circuit further. There may be a module involved to control the lighting intensity.