Hi all. I think the answers to my questions and many more are pretty much
available at the following excellent oil pressure links:

http://gerry.vanagon.com/files/technical/dynamic-oil-pressure-sensing-system
.txt

http://www.vanagon.com/info/articles/oil-pressure-probs/

Cheers,
Doug Fitz-Randolph

> -----Original Message-----
> From: Fitz-Randolph, Douglas
> Sent: Friday, August 09, 2002 11:46 AM
> To:   'vanagon@gerry.vanagon.com'
> Subject:      L-shaped circuit board behind speedo...
>
> I think this is the "dynamic oil pressure" board? I'm changing instrument
> panels on an '86 Transporter - the original instrument panel had this
> circuit board and corresponding connector on the foil, the replacement
> instrument panel does not have either.
>
> With the original, the oil pressure LED blinks with the ignition switched
> on, then goes out immediately when the engine starts. With the
> replacement, the oil pressure LED stays on solid with the ignition
> switched on, then flickers and goes out about a second after the engine
> starts.
>
> My question is, what function does the circuit board serve? What would be
> the implications of not having it installed?
>
> Thanks,
> Doug Fitz-Randolph
> Freeport, ME