At one time one of the list vendors had a copy of the wiring changes
that needed to be made to install a late model instrument cluster into
an older model van.  I know that I had to do the wiring change on my '84
when I installed a new instrument cluster and that one of the pins had
to go to ground to keep the buzzer from sounding.

John

On Thu, 2009-01-08 at 14:59 -0800, neil N wrote:
> Likely you or your friend have looked, but look at Bentley P 90.23 for
> the Dynamic Control Unit pinout. P 97.74 is the '86 electrical diagram
> and shows a Yellow 0.5 wire from the high pressure sender to the
> Dynamic Oil Pressure Control Unit.
>
> Maybe try grounding the pin T14 (double check that this info is
> accurate and confirm with a VOM for continuity from T14 to the correct
> pin shown on P 90.23) Grounding it should "tell" the Dynamic .... Unit
> that there is a high pressure switch present and working normally.
> (grounded)
>
> FWIW, the cluster I pulled from my '85 parts Vanagon, has a "place"
> for the Dynamic Oil Pressure Control Unit, but none is present and
> IIRC, there is no flexible PCB present for it either. I understand '85
> was a crossover year for some electrical stuff.
>
> Hopefully someone like Mark D will correct me if I'm wrong! :)
>
> Neil.
>
> On Thu, Jan 8, 2009 at 2:23 PM, Jeff Lincoln <magikvw@gmail.com> wrote:
> > Hello Volks!
> >
> > I had been sent instructions on this for my friend before - but the
> > instructions and what he is looking at on the bus are not making sense.
> >
> > He has a 1985 GL (non-Westy). The original gauge cluster had the Tach and
> > the digital clock. He has acquired another gauge cluster that was supposed
> > to be an '85 as well (with Tach and digital clock) but apparently it is not
> > - because it is equipped with the Oil Buzzer.
> >
> > So the question is - how on earth do we disable that buzzer?
> >
> > The instructions he has say to bend the ground pin on the connector out of
> > the way to disable it - however the pin the instructions say is ground does
> > not jive with what Bentley says.
> >
> > I am sorry I cannot be exactly specific but I am not where he is right now
> > and I also do not have the instructions provided in front of me. I told him
> > before he needs to join this list!!!!!!!!
> >
> > Any advice I can pass along is greatly appreciated.
> >
> > --
> > Thanks,
> >
> > Jeff
> > '90 Carat (Grover)
> > '86 (We call this one Parts)
> > '78 Bus (Melissa) Patty's Bus
> >
>
>
>
> --
> Neil Nicholson '81 VanaJetta "Jaco
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
> http://web.mac.com/tubaneil
> http://tubaneil.googlepages.com/