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Re: Were VW electrical designers on acid?



hmm, good point. I can't remember exactly what was being grounded although I 
don't think it was any of the gauges. I'll need to have another look at the 
diagram.

Ewan.


>From: drew <drew@dyermaker.cs.uoguelph.ca>
>To: Ewan Hopkins <ewanhopkins@hotmail.com>
>CC: scirocco-l@scirocco.org
>Subject: Re: Were VW electrical designers on acid?
>Date: Tue, 8 May 2001 09:37:44 -0400 (EDT)
>
>
>My guess would be that they'd ground the guages in the cluster at the
>engine, as this is where the senders are grounded, providing a reading
>that wouldn't be prone to problems with the chassis ground?
>
>Drew
>
>
>On Tue, 8 May 2001, Ewan Hopkins wrote:
>
> > I was tracing a problem at the weekend where my cluster electrics were 
>going
> > haywire when I switched on the headlights - I posted a couple of weeks 
>ago
> > looking for hints as to what might be causing it and bad earth seemed to 
>be
> > the consensus. I had checked the earth roses at the relay plate and 
>removed
> > the cluster looking for bust tracks and then spent a good while tracing 
>the
> > diagrams in the Haynes manual. I eventually noticed an earth circuit 
>which
> > ran from two points in the cluster and merged at a connector near the 
>relay
> > plate before going straight past the earthing roses on the right of the
> > plate and went straight to a connection on one of the valve cover studs
> > which was only used for these two earths. I followed the wiring at this
> > turned out to be the case. _WHY_?!*&£$
> > Needless to say, the wire had broken off the connector on the head so I 
>just
> > re-routed the circuit from the 2 into 1 connector straight to a spare 
>lug on
> > one of the earth roses and it fixed the problem.
> > Would have been useful to know about that strange arrangement before I
> > started!
> >
> > Ewan Hopkins
> > '85 2L Storm
> > 
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>
>Drew MacPherson, Network Analyst, University of Guelph
>
>drew@dyermaker.cs.uoguelph.ca           |  visit the Massey-Harris page:
>http://dyermaker.cs.uoguelph.ca/~drew   |  http://m-h.cs.uoguelph.ca
>
>
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