Grounds under dash
I prefer to have independant ground locations instead of grounding multiple items at a single point.
Please let me know if you have any other wiring related questions.
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Agreed. I only mention it because I found that my wideband controller (located underneath the car, but the harness runs inside) was best grounded directly to the engine, so I ran a ground wire through the firewall to the cylinder head (it was originally grounded to the dash mounting stud and I had some issues).


