you don't need to take out your cluster to get the speed signal wire for the guage...
it's in your dash plug by the ecu....green/yellow stripe, if you want to you can run that all the way to your square 8 pin connector at the underhood fuseblock. there you'll see the 8 pin connector. tap into your green/yellow wire there and you should be good.
Dave
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 RB25 280z GT30/76R 441hp/381tq 11.9@125
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