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!