Fixed it. I checked continuity on wires leading out from dme pin 42. Turns out the wire was blue/yellow. wtf? Anyway, made sense cuz it was included in the Treehouse wiring harness, and unused behind the dash (was formerly running into plug C1, C2 or C3, not sure which, i cut them off) . Anyway, I hooked it up just as I describe above. Red line is back to 7k, and the dash speedo still works.
Hopefully not a fluke....
Hopefully not a fluke....
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