I'm putting together an LS plug and play harness using the GM wiring and a couple of plugs I sourced online and from the junk yard. I beleive I have them all wired correctly but I have one question and would like to share my wiring because the diagrams on here and mine have some dissimilar characteristics. Please let me know if Ive overlooked something.

My question is simple: should the tach wires for the coil plugs (stock harness) share the sensor ground wired to the ECU options port position A?
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https://cimg3.ibsrv.net/gimg/www.mia...ed24450f6f.png