First of all, does your oil warning light work? That means, when the
engine is off for a little while and you turn the key on, does the oil
light come on? Does it stay on until the engine is started and then go
out? If so, the basic low rpm pressure circuit is working. Assuming a
working oil light at low engine speed if your oil warning buzzer is
going off above 2000 rpm then you can consider the slight modification I
suggested. There is more than one way to accomplish the same result and
it is possible that you have already done one of the other methods,
involving grounding the high rpm signal line.

Note, we are only talking about the issues when using a 86+ dual oil
pressure system instrument cluster foil in an 85 or older van or with
any year van that now has an engine with only one oil pressure switch.
Subaru engine people have the same issue as do many TD and TDI conversions.

Mark

John Lauterbach wrote:

> When I put a new instrument cluster in my '84 Vanagon, someone sent me a
> diagram of wiring change that needed to be made at 14-pin connector to keep
> oil pressure buzzer from sounding and to handle the tachometer.  Now there
> is apparently another step that I should have taken as outlined my Mark
> Drillock.  Can someone post complete lists of changes that need to be made
> when new instrument cluster goes in '84 Vanagon.
>
> Thank you,
>
> John
>