In a message dated 98-06-04 21:10:00 EDT, raven@HALCYON.COM writes:

<< Is the buzzer used by the oil pressure warning circuit separate from the
 seat belt warning buzzer? Looking at the wiring diagram in the Bentley
 manual, the two appear to be separate self-contained circuits. I'm wondering
 because I pulled out the annoying seat belt warning buzzer a long time ago
 and I want to be sure that I haven't inadvertently disabled the oil pressure
 warning alarm.

 Mark McCulley
 87 syncro Westfalia
  >>

 To find out if your oil low pressure buzzer is working, follow the brown wire
on the right side of the water pump. It goes up and under the intake manifold,
to the left of the engine compartment. I beleive the connector has a yellow
wire on the other side. Dissconneced that connector. Start the car. Hold the
RPM at 3000 and the buzzer should come.  The control unit in your instrument
cluster needs to see that curcuit closed at 2000 RPM or higher, and what you
are doing is fooling it.
 Let me know what happens. Michael Modl. 87 syncro