Miguel, 

IIRC, there is no power going to that switch.  The circuit is completed via a ground signal.  You may want to search elsewhere for your problem.

Cheers, 

Jeff

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of miguel pacheco
Sent: Sunday, December 19, 2010 2:23 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Friday fun.. Vanagons on fire

On my 90 2wd auto.....looking out the window I noticed my van was
sitting in a pool of liquid. I ran out and there was fuel pouring from
the engine compartment. I could hear the fuel pump running. I
disconnected the battery ground, stopping the pump. Upon inspection,
the wiring harness had shorted out. It looked like the short initiated
at the power steering pressure switch. These spade connectors come
from the factory, clad in plastic. In this case, these factory
connectors had been replaced by uninsulated connectors at some point.
   Anyway, it sure looked as if this is where it originated as one of
the two wires was disconnected and resting on metal, the wire was
fried. If I recall my Bentley electrical search, these wires are not
fused? (please jump in here if you would.) Fortunately, I had another
wiring harness and I was operational in a few hours.
This is interesting when considering the various scenarios that could
burn up our vans.
Miguel

He who possesses art and science has religion; he who does not possess
them, needs religion.
Johann Wolfgang von Goethe