Ooo thanks for the info.  I'll probably try this.

Tim Leek
Technical Staff
MIT Lincoln Laboratory
Lexington, MA, 02144
tleek@ll.mit.edu

On Apr 4, 2006, at 1:04 PM, mark drillock wrote:

> 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!
>>
>>
>
>