Thank you very much, David.

Mystery continues.  My Son and I checked oil before we drove from the
TBA.  Oil level fine.  I took the van for a spin.  No buzzer over 2000
rpm, so the ground wire is in place.  At more than light throttle, oil
pressure light flashes at same periodic manner than if sensor
disconnected.  If I am say at 2500 rpm, and take my foot off accelerator
pedal, light goes out.  Putting moderate pressure on pedal causes it to
go on.  After driving around about 15 minutes, oil pressure light seemed
to return to more nomal operation.

John

On Sat, May 27, 2017 at 5:35 PM, David Beierl wrote:

> http://www.oldvolkshome.com/late_van_cluster_install.pdf
>
> Yrs,
> d
>
> On Sat, May 27, 2017 at 5:20 PM, John Lauterbach
> <john@jhl.mgacoxmail.com>
> wrote:
>
>> Had to let my local TBA deal with an apparently defective oil
>> pressure
>> switch.  Switch replaced, but oil light was flashing regularly at
>> idle
>> when went to pick up van.  Got a call this afternoon.  Mgr. claimed
>> wire
>> was disconnected at instrument panel, and when shop reconnected it,
>> light was off at idle, but came on steady at slight acceleration.
>> Never
>> any problems with oil pressure other than recent switch problem.
>> Engine
>> is 2003 Boston Engine long block.
>>
>> Van has late model instrument cluster (from batch available in 1999).
>> I
>> have lost crib sheet for wiring changes required this instrunent
>> cluster.  If you know of where I can find one on Internet, please
>> send
>> me the URL.
>>
>> Thank you,
>>
>> John
>>