You don't have to remove anything, short anything, or cut anything. The
workaround is simple and safe. The oil circuit board must be left
installed and hooked up or the low rpm warning won't work either. That
would be foolish.

On the back of the speedo is the blue foil and a 6 pin connector that
plugs into the "L" board. Unplug the 6 pin female connector and bend the
correct male pin out of the way. Then put the connector back on but make
sure it misses the bent pin. That is it, you are done.

The correct pin is the one on the very end closest to the driver's door.
With that pin out of the way, only the low pressure switch will be
monitored.

The bent over pin is the one that carries the tach signal to the oil
warning circuit board.You don't have to bend it very far, just enough to
the side so the connector can squeeze by as it goes into place over the
rest of the pins. The pins are grouped in sets of 2 and 4. The tach pin
is the outside end pin of the group of 4.

Mark

Tim Leek wrote:

> Vanagon people,
>
> I have an 87 Vanagon that likes to buzz at me and flash the oil light
> after 15 minutes.  Super annoying.  Wife wants me to sell the piece
> of $*&#$.  Oil pressure is fine (according to click and clack).  Yes,
> I've replaced both oil pressure senders.  No, I don't have time or
> money to diagnose the wiring harness or that dynamic oil pressure L-
> board behind the speedo.
>
> So ... I'm looking to disable the buzzer somehow.  Here are the
> options as I see them.
>
> 1. Short the 0.9 bar sensor where it comes into the L-board to
> ground.  This works, i.e. if I pull over whilst the buzzing is
> happening and do this, the buzzing stops.  But is this a bad idea
> somehow?
>
> 2. Remove that stupid L-board, since (after staring at the wiring
> diagrams) doesn't it just serve to warn you when the oil pressure is
> not in spec?  I can't see how it actually "controls" anything.
> Unfortunately, I've tried this and it means I can no longer start the
> car.  Perhaps I can't just take it out without jumping some magic
> wires together?
>
> 3. Find the buzzer and kill it dead.  Okay, so where the hell is it?
> Is it the wee electro-mechanical looking device on one end of the
> aforementioned L-board?  Is this bad idea since that buzzer wherever
> it lives buzzes when other bad things happen that I may want to know
> about like engine getting too hot.
>
> I'm leaning toward 1.
>
> Help!
>
>