Hi Stacy,

Thanks for your perspective.  I hadn't though of damage potentially
incurred while unplugging/pluggin in the ECU.

I did remove the ECU from the wall, tied a 2 foot long piece of
flourescent orange survey tape to the connector, left the back seat
up... and I disconnected/re-connected the plug before I gave it to them
to make sure there wasn't any strange way to disconnect it.

Everything went well...

Thanks everyone for the feedback.

Cheers,
Steve W.

On 02/09/2015 10:15 AM, Stacy Schneider wrote:
>      If I were in a shop environment and someone asked me to unplug
> the ECU for a procedure that I do on a daily basis and is not the norm
> in the industry because it is just not an issue, I would send the
> customer packing. What would happen if the Service guy somehow had
> something break while he was doing it or was heavy handed and bent one
> of the pins or dust from grinding got up inside the The ECU or its
> plug. If I was hungry for work and needed this job at a minimum I
> would make it a line item(with a fee) and have the customer sign off
> that any running issues pertaining to the ECU is strictly on the
> Customer.
>      Been down roads like this before ,and they rarely turn out well.
>
>           Stacy
>
> On Wed, Sep 2, 2015 at 8:05 AM, Steve Williams
> <steve@williamsitconsulting.com
> <mailto:steve@williamsitconsulting.com>> wrote:
>
>     Hi,
>
>     Thanks for the feedback.
>
>     I'm a bit shy about electrical components NOT being isolated in the
>     presence of un-anticipated voltages, even if if there is no complete
>     circuit.
>
>     This all started when I found out that it's possible to find out
>     how far
>     away a break in a cable is using electricity (signal waves), even when
>     there's a break in the cable and no complete circuit!
>
>     Here's hoping they unplug the ECU.  I had to leave my van @ the shop,
>     but I had them write explicitly on the work order to unplug the ECU
>     prior to any welding.
>
>     I did wrap some string around the ECU plug so I'll know if they did or
>     not!  lol.
>
>     Thanks again,
>     Steve W.
>
>
>     On 01/09/2015 10:26 PM, Steve Williams wrote:
>
>         Hi,
>
>         I am taking my van in tomorrow for a bit of patching on my exhaust
>         system.
>
>         It suddenly occurred to me that they may be using an electric
>         welder on
>         my vehicle rather than a gas welder.
>
>         Is it recommended/mandatory to unplug the ECU if electric
>         (arc/mig/tig/etc) welding is being done on a 1991 Westfalia?
>
>         Thanks,
>         Steve W.
>
>
>
>
> --
>    1989 Swedish Tristar with Aluminum gates and Atiwe 16" Wheels.
>     Oldest son is an Eagle scout.