I had the same problem. Couldnt figure it out to save my life. WHY wouldnt my Duster start....ALL I DID WAS PULL THE CLUSTER TO DETAIL IT. Put it back in, but no ignition fire to the engine. HHHHHUUUUUUHHH?
When I found out the prob from one of my Bud's, I about ****.
The thick RED and BLACK wires at the LEFT of your Cluster are not correct. Maybe the wires are not connected correctly (as mine werent) or maybe one is frayed or excessively loose.
Crawl back under there and make sure they are connected or just snip them altogether if it is a race car, like mine. Then it will never come back to bite u in the *** again. We dont use the factory gauges in racing anyway.
THIS is definitely your problem.