Shielding on Diy-WB connector wires

[Hugh Keir]

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
> >
>
> ----- End of forwarded message from owner-diy_efi at diy-efi.org -----
>
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