Dash light problem, and more.....

[kerrvin123]

Hi, I have a strange problem and wonder if anyone can point me on the right track.
The lights on my dash for my indicators,main beam and fog lights do not come on, they are working outside ok. Also the dimmer switch does not dim my sat-nav screen and the reverse lights do not work. I dont know if its just coincidence or not but it all mucked up at the same time. Thanks for looking