The part was used in 1986 and later Vanagons.

Lots of Golf/Jetta/Quantums have it too. Gas and diesel boards a
different but look the same. It lives inside the speedo housing but
connects to nothing inside there. Page 90.14 of the Vanagon Bentley
shows the cluster exploded diagram 86+.

Mark

neil N wrote:
> Ah.
>
> So if I keep it as is, I have to "live with" the chirping?
>
> (I'm too cheep to buy the extra part ..... pun intended)
>
> Actually I'm just not sure how to harvest and install the oil pressure
> logic board from an appropriate Vanagon cluster.
>
> Maybe the Jetta cluster has it? I also have an '85 Vanagon cluster.
>
> Thanks,
>
> Neil.
>
> On Wed, Oct 8, 2008 at 6:45 PM, mdrillock <mdrillock@cox.net> wrote:
>
>> The oil pressure logic board has an engine rpm signal input. It only
>> monitors the high pressure switch when the engine rpm is high enough for the
>> switch to be valid.
>>
>> Mark
>>
>>
>>
>>
>> neil N wrote:
>>
>>> Hi all.
>>>
>>> I connected a warning buzzer to the Jetta "High pressure" oil switch.
>>>
>>> Simple diagram of what I did:
>>>
>>> http://tubaneil.googlepages.com/HIghPressureOil.jpg
>>>
>>> My test: engine running, oil switch disconnected, buzzer went on.
>>> Ignition on, buzzer goes on, engine running, buzzer stops. This seems
>>> correct. But.....
>>>
>>> Driving up my usual mountain test route, the buzzer "chirped" on
>>> inbetween gears near the top. Idling at the top, the buzzer "chirped"
>>> on/off in tempo with idle RPM. Revving it up a little stopped this,
>>> but it returned at idle. Returned home, no chirping. (presumably, the
>>> oil was cooler from coasting down the mountain)
>>>
>>> The '86 Vanagon Digifant diagram, shows a solid state part along with
>>> a relay (buzzer?) and the warning light. The Jetta diagram is similar.
>>>
>>> Is the buzzer chirping a sign of poor oil pressure at idle (hot), due
>>> to a lack of the solid state part, or ?
>>>
>>> It didn't do this at idle cold/warm. Oil level is fine.
>>>
>>> Thanks for any help!
>>>
>>> Neil.
>>>
>>>
>>>
>>> --
>>> Neil Nicholson '81 JettaWesty "Jaco
>>>
>>> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>>> http://web.mac.com/tubaneil
>>> http://tubaneil.googlepages.com/
>>>
>>>
>>>
>>>
>>
>>
>
>
>
> --
> Neil Nicholson '81 JettaWesty "Jaco
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
> http://web.mac.com/tubaneil
> http://tubaneil.googlepages.com/
>
>
>