Sensor ground ?!?

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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Solow
MegaSquirt Newbie
Posts: 4
Joined: Fri Mar 09, 2012 10:26 am

Sensor ground ?!?

Post by Solow »

Im a bit confused now..

In the megamanual it states that the sensor ground must go to pin 19 at the DB37

in a diagram it goes to pin 7...

and just found another diagram where it goes to PIN 1 + 2..

And finally a diagram where it goes to Enginecase..

What is the best way to have the sensorground :?
VW type 1, 1914 ccm with MS2 V3.0 (fw 2.905) and EDIS ignition
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trakkies
Super Squirter
Posts: 1162
Joined: Tue Dec 30, 2008 3:06 am
Location: SW London, UK

Re: Sensor ground ?!?

Post by trakkies »

It doesn't much matter as all those pins are connected to the MS PCB ground. The important thing is to run the sensor grounds back to the DB37 - not somewhere else. Unless you are using a wiring diagram for say the relay board, in which case follow that.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
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Solow
MegaSquirt Newbie
Posts: 4
Joined: Fri Mar 09, 2012 10:26 am

Re: Sensor ground ?!?

Post by Solow »

Thanks :)

I will then wire them all back to the groundpins on DB37 :D
VW type 1, 1914 ccm with MS2 V3.0 (fw 2.905) and EDIS ignition
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vwsuperbug
MegaSquirt Newbie
Posts: 9
Joined: Wed Feb 09, 2011 6:17 pm

Re: Sensor ground ?!?

Post by vwsuperbug »

If you are using a relay board, can an additional wire from the engine block go to the sensor ground on the JP1 terminal for the coolant, TPS and air?
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