It sounds like the plugs for the cluster are not fully engaged. When you reconnect the plugs, make sure the sliding part of the connector is in all the way, it should kind of "snap" to let you know it is 100% connected. It's been a while since I did mine, but I think I had to test it 2-3 times, so I would recommend getting everything connected, then reconnect the battery and check it before reinstalling all of the screws that hold the cluster to the dash.
Porscha
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