Date:         Mon, 21 Oct 2013 11:18:24 -0700
Reply-To:     Dick Wong <sailingfc@DSLEXTREME.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dick Wong <sailingfc@DSLEXTREME.COM>
Subject:      Re: Wiring color question
Comments: To: Dennis Haynes <d23haynes57@hotmail.com>
In-Reply-To:  <BAY179-DS276B202B8342E545D6A435A0010@phx.gbl>
Content-Type: text/plain; charset=ISO-8859-1

Roger Wilco.

Thanks Dennis.


On Mon, Oct 21, 2013 at 11:12 AM, Dennis Haynes <d23haynes57@hotmail.com>wrote:

> Almost everything the ECM does is by controlling or measuring something to
> the chassis. In the control world this is known as sinking logic, as
> compared to sourcing logic where that work is done on the positive side.
> For
> example the injectors get feed battery voltage and the ECU completes the
> circuit to the chassis to open them. The temp sensors complete the circuit
> to ground from the ECU. Follow the wiring diagram and stick with it.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Dick Wong
> Sent: Monday, October 21, 2013 1:56 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Wiring color question
>
> I noticed that there are brown/white wires going into the ECM.  So those
> are
> only grounded when the ECM is "on" or ECM programming switches it to
> ground?
> What if I connected the brown/white wire directly to a ground lug on the
> chassis?
>
> Thanks.
>
>
> On Mon, Oct 21, 2013 at 10:45 AM, Neil N <musomuso@gmail.com> wrote:
>
> > brown/white is for switched grounds?   (i.e. for dome light)
> >
> > If the gauge is the same, if one is used in place of the other, maybe
> > the only issue is slight confusion for someone else trouble shooting
> > that wiring?
> >
> >
> >
> > On Sun, Oct 20, 2013 at 11:59 PM, Dick Wong
> <sailingfc@dslextreme.com>wrote:
> >
> >>
> >> What is the functional difference between the Brown ground wire and
> >> the Brown/White wire?  What if I use the Brown/White circuit instead
> >> of just Brown (direct ground)?
> >>
> >>
> >
> > --
> > Neil n
> >
> > Blog: tubaneil.blogspot.ca
> >
> > '88 Westy http://tinyurl.com/c8rlw6p
> >
> > '81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/
> >
> > Vanagon VAG *Gas* inline-VR Engine Swap Group:
> >
> > http://tinyurl.com/d7gd5ej
> >
>
>