Originally Posted by willwren
You'll find the cluster removal procedure in Techinfo if you need it. You may need to disassemble each individual layer or board, and re-seat the connectors.
Agreed; since all three gauges are affected simultaneously, the problem is in the gauge cluster, with either the main plugs going in the back (there are two: one behind the tach and a slightly-smaller one behind the DIC area) or with the clips that connect the gauges to the circuit boards.
I'd say there'* a good chance that just disassembling and reassembling per the directions in TechInfo will get things going again. (And hey, you've got all weekend to work on it!