Impala Tech - View Single Post - Factory tach stopped working
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post #2 of (permalink) Old 08-11-2019, 10:58 PM
Senior Member
Join Date: Apr 2013
Location: Canada
Posts: 355
There must be a ground wire somewhere I would think?

I am guessing the two to the fuse box are pink (12V) and gray (light)?

And yes, brown to negative on the coil.
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