It's been a while, but as I remember the vacumn switches down under the
steering column which are activated by the brake pedal are easy to service.
Reccomend taking them out and cleaning then up, and lubing the switch pin
there. Some vans have one, others have two, but they are the same. There is
a hand held vacuum device to check their proper operation befor
reinstalling.

On Sun, Oct 4, 2020, 3:00 PM Dan N <dn92610@gmail.com> wrote:

> I am not a specialist on cruise control on vanagon but I have it on 2 of my
> vans...
> so far as I know on vanagon OEM... besides electrical wiring, there are
> vacuum pump, vacuum switch under the pedals, switch on the steering column,
> vacuum diaphragm linked the throttle body at the accelerator lever etc
> etc...
> I have a friend with an OEM cruise control on his van, he get rid of it and
> replaces it with this
> https://www.gowesty.com/product/-/23793/gowesty-cruise-control-?v=
>
>
> On Mon, Sep 28, 2020 at 11:53 AM mccullough bob <mbob1950@gmail.com>
> wrote:
>
> > Hey Friends
> > I have a old cruise control unit that came out of my 91 Westy when I
> > rebuilt it. It wasn’t working due to some
> > wiring harness damage. I haven’t been able to find any info on it other
> > than its made by Specific Cruise Systems Inc.
> > The company is in Texas but has no info on their website about this unit.
> > Ive got the servo motor for the throttle cable and
> > the dash switch control. Im not sure how it sensed speed. Anyone have or
> > heard of these and have a wiring diagram for it?
> > I thought I would give it a try in my 86 Syncro before coughing up any
> > more $.
> >
> > Thanks to all for this knowledge base.
> > Bob
> >
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> >
>