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Shield grounding

EFI Wiring Fundamentals

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Discussion and questions related to the course Motorsport Wiring Fundamentals

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Just curious,

1. why is only one end of shielding grounded?

2. why is it recommended the grounding point be at the end nearest the ECU

You want the shield to provide a protective layer that is close the the ground potential of the device reading the signal. If you connect a shield at both ends, you are asking for a potential ground loop, with the potential rising and falling, basically inducing noise into your signal.

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