I ran into this problem when I installed my Audi engine into my Double Cab.
 The Audi engine only has the one pressure sender for when the oil pressure
it too low.  The solution is to ground the yellow oil pressure wire as this
is the "normal" state it is in.  It takes one level or security away but VW
and Audi didn't seem to mind in their inline four models.

At 09:22 9/14/98 -0400, Bill Knight wrote:
>I just installed a complete dash cluster from a 1988 Vanagon into my
>1984 Westy (Wolfsburg).  Everything hooked up perfectly and everything
>worked, but a few seconds after I started the engine, the oil light
>started flashing and a buzzer sounded.  I guess it is the dual-sender
>warning system being confused by the single sender in the 84 model.
>Can anyone give me a fix to fool the system and make it work properly
>with only a single sender?
>
>Thanks,
>Bill Knight
>Raleigh, NC
>
>

-- David Marshall, Quesnel BC, mailto:david@volkswagen.org --
   -- 78 1.8L VW Rabbit, 80 2.0L VW Caddy, 87 Audi 5KQ  --
   --  85 1.8L VW Cabrio, 88 2.0L VW Syncro Double Cab  --
   --   Volkswagen Homepage http://www.volkswagen.org   --
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