Alantf is correct about the black/white wires being 0V.
The frame is also connected to 0V. As far as I remember, I squeezed the tach's zero volt wire under a nut at the coil, to connect to the frame.
You'll have to connect to the coil under the tank anyway.
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2005 "Saturn Black", stock + tach
Last edited by 5th_bike; 05-21-2016 at 11:14 PM.
Reason: Typo, and extension.
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