Shielding on Diy-WB connector wires

[rr]

No problem. I hope that you enjoy your stay here in the states.

Thanks,

BobR.


Hugh Keir wrote:

> Bob,
>
> I am working in the USA for the next couple of weeks and am unable to
> look at the cables just now.
>
> The shielding continues right up inside the loom for a good way. I am
> fairly certain that there is no grounding at the connector end.
>
> I do not have complete loom to look at, but can possibly go back to the
> scrap yard and investigate further.
>
> I have pulled several of these connectors from different Honda vehicles
> and they all have the same three wires shielded.
>
> Hugh
>
> ----- Original Message -----
> From: "rr" <RRauscher at nni.com>
> To: <diy_efi at diy-efi.org>
> Sent: Monday, April 01, 2002 6:52 PM
> Subject: Re: Shielding on Diy-WB connector wires
>
> >
> > This is some interesting information. Were you able to check if the
> copper
> > braid was grounded at either end? It is this DIY research that enabled
> > the development of the DIY-WB.  The yellow - heater wire would
> typically
> > be tied to ground. The cal resistor wires being shielded would help
> prevent
> > noise from directly entering the calibration circuit.
> >
> > This is something that should be kept in mind while building cables
> for
> the
> > DIY-WB. Thanks for the info. If you could find out more it would be
> helpful.
> >
> > BobR.
> >
> >
> > Hugh Keir wrote:
> >
> > > I am finishing off the wiring on my WB circuit board using
> connectors
> from a
> > > scrapyard.
> > >
> > > I noticed that the calibration resistor wires and the yellow -ve
> heater
> wire
> > > are wound round each other as a twisted triple and have a copper
> braid
> > > sheath outside them and then a protective rubbery sheath to keep
> them
> all
> > > together.
> > >
> > > This suggests to me that there might be a shielding issue either
> with
> the
> > > standard Honda wiring, or more importantly there may an issue in
> general
> and
> > > these three wires should be separated from the others in all our
> set-ups.
> > >
> > > Hugh
> > >

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