Grounding sensors

For discussing how to choose sensors and create a wiring harness for all Bowling and Grippo versions of the MegaSquirt® EFI controller.
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maidenfan
MegaSquirt Newbie
Posts: 1
Joined: Mon Jul 16, 2007 9:59 pm

Grounding sensors

Post by maidenfan »

Hi, just wondering where do you get the ground for the sensors?
I was going to make a star ground where the MS is grounded. Is that ok?
synackack
MegaSquirt Newbie
Posts: 14
Joined: Wed Jun 14, 2006 3:42 pm

Post by synackack »

If you're using a relay board, there's a specific ground for each sensor.
All of these are essentially tied into the same ground as the MS.

If you're making your own harness, yes ideally you should ground with the MS. The shorter the ground path from sensor to MS the less likely you'll see noise from various other electrics in the car.

Also, some people say that the engine is a preferential ground (vs the chassis)
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