The fuses that go to the dash cluster are behind the glove box
there is a fuse chart there to .
Also if you look at that link I provided it describes the electrical system.
And tells you which fuse goes to the instrument cluster.
There are three or 4 separate lines for +12 that go foward.
I believe the cable on the side closest to the inside of the trunk(on top of the battery power distribution block) is the one that powers the entire dash and interior electronics you should check that to make sure its connected.
This is for a 530 maybe a different fuse .
If it comes alive with this remember you will get a few error messages
till you drive it.