I had this reply typed out tried to attach a Husaberg 570 Repair Manual and the screen just went blank.
Anyway, what I had said was that I had exactly the same problem on my 2009 570. I had double checked all the fuses had been placed correctly (as some are just blank spare fuse holders) and after a lot of searching found that the power was getting to the left hand side switch block but was not being distributed back from the switch block anywhere. I am luckier than most to have a 2004 650 I am thinking of rebuilding so I pinched the switch block off that bike and replaced the one on the 570 and it all worked perfectly.
As the headlight section of the switch block is rivetted (actually their like brass eyelets) together I will at some time drill these out just to see what has stopped the connections being mad inside.
Hope that at least gives you something to look at.
Regards
Anthony