Date:         Mon, 21 Oct 2013 11:20:58 -0700
Reply-To:     Neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Neil N <musomuso@GMAIL.COM>
Subject:      Re: Wiring color question
Comments: To: Dick Wong <sailingfc@dslextreme.com>
In-Reply-To:  <CAJ-pOoZ5uQfFNr2jsE3aPav2UjE1-fOYOYMqBj4R1DFNJ2hsYQ@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

Right. Was recalling my Motronic ECU while composing my reply.

I may be misunderstanding, but if you're thinking of connecting a
brown/white from ECU to chassis, that doesn't sound correct.

The ECU will need a constant ground that it would use to supply grounds as
needed to various components connected to it.

looking here

http://www.wiringdiagrams21.com/wp-content/uploads/2011/06/VolkswagenVWEurovan2.5LEngineControlModuleWiringDiagram.jpg

I see a brown/white ECU 28 to several things. It looks like its a "supplied
ground" switched inside ECU.

Neil.


On Mon, Oct 21, 2013 at 10:55 AM, Dick Wong <sailingfc@dslextreme.com>wrote:

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)
>>
>>


--
Neil n

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