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Help needed with earthing point location

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Old 03-08-2011, 04:02 PM
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peanut
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Default Help needed with earthing point location

I am trying to find out where the earthing points GPll & GPlll are on a 944S (possibly MPll & MPlll on other schematics)

On the Porsche schematic I have they are shown close the fuse/relay box .I believe one or both earth the ECU (DME) ?

I assume that they are under the dash somewhere. has anyone got a picture ? or know exactly where they are ?
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Old 03-08-2011, 04:04 PM
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JohnKoaWood
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IIRC II is in the drivers foot well, near the back side of the fuse pannel, and III is in the engine bay near the vapor recovery crap...

I can check on my schematics tonight once I get home, but it will be LATE tonight...
Old 03-08-2011, 04:12 PM
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peanut
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wow thanks John that was quick !...

The ground point in the footwell , Is it up under the dash near the underside of the fuse/relay box ? or on the firewall near the DME /ECU ?

I don't think the UK cars have a vapour trap I'd appreciate a piccy of the one under the hood if possible.
Thanks for your help
Old 03-08-2011, 04:33 PM
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JohnKoaWood
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Originally Posted by peanut
wow thanks John that was quick !...

The ground point in the footwell , Is it up under the dash near the underside of the fuse/relay box ? or on the firewall near the DME /ECU ?

I don't think the UK cars have a vapour trap I'd appreciate a piccy of the one under the hood if possible.
Thanks for your help
Will get one once I have a chance, but then....
Old 03-08-2011, 05:00 PM
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kombatrok
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I'm not 100% sure on a right hand drive car... On US models its under the very far left corner of the dash if you look up under there you should see 2 bolts with ground wires, not hard to find.
Old 03-08-2011, 06:04 PM
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peanut
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Originally Posted by kombatrok
I'm not 100% sure on a right hand drive car... On US models its under the very far left corner of the dash if you look up under there you should see 2 bolts with ground wires, not hard to find.
ahh have seen a picture with two large brown wires but only one ground point.
One ground point must be above the glovebox out of sight.

thanks.
Old 03-09-2011, 09:14 AM
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JohnKoaWood
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Here is the diagram from the FSM, with descriptions of the locations....

I will see if I can get actual pictures of the grounding points later today...
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Old 03-09-2011, 03:01 PM
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cheers John. Thats the first Porsche WM schematic I have seen with the grounds specified .
Thats a big help thanks



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