Ok. Start by checking all fuses. If they are ok, remove the cluster. Check for:
12v on dark blue/white wire, key on
ground on black/light green
ground on black
12v on pink wire
12v on red/white with key on
Also on the violet/white wire, with the key on you should see roughly 2.5 volts, it will probably be fluctuating a little.
If you have all of these inputs, the cluster is bad and will need to be replaced.
This will take a while, I have to pull the front of the gauges off to get to the cluster right?