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Man you need to edit your spelling. You need to find the sources on the Aristo motor where the signal would go to your gauges. There is a possibility that you might be able to use those. Use the search tool helpful.
The wiring harness is a modified one from Tech 2 motorsports and it seems to work fine. They sent a wiring diagram for the Dakota Tach adapter, and its wired up and should be working fine, but the tach still does not register.