Is that the temperature regulating switch (411-963-107) ?  multi connector
plug is 8 prongs (1 X  .250inch  et 7 X .110 inch : connector ) and 2
"outside" connectors .250 inch spades  tag as connector K and connector 31.

connector K is  "unassign" - "free" - "nothing connects to it". While
connector 31, well, it's switched ground.

to my knownledge , connetor K was use in old setup for the indicator light

If thats helps

On Fri, Oct 30, 2015 at 1:46 PM, Neil N <musomuso@gmail.com> wrote:

> Glad that helps Frank. Ya I'd figure a brown wire to be ground but
> as I'm sure you're doing, a VOM would confirm.
> My '81 Canadian Westy had a gas heater.
> Theres a multi point ground at driver side frame rear of
> fuel tank. IIRC, there were at least 3 brown wires going to that point.
> Most likely they're ground points for wires coming out of the larger
> connector to gas heater but I'm guessing.
> I also recall a connector at dash behind glove box
> and at least 2 behind dash above fuse panel.
>
> Neil.
>
> On Fri, Oct 30, 2015 at 3:20 AM, Frank Condelli <RAlanen@aol.com> wrote:
>
> > Neil, thanks !  Part of the mystery solved.  That photo in the first link
> > shows the heater control switch with one of the spade terminals having a
> > brown (ground I will presume) wire going to it, the second spade terminal
> > has nothing connected to it, is this the case or is that wire missing
> from
> > the photo is my next question !  The wiring diagram in the second link
> may
> > be of some help if I can trace the wires going to that control switch,
> not
> > easy !
> >
> >
> >
>
> --
> Neil n
>
> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
>
> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
>
> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>
>
> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
>