Ultimately the wire goes to the sensor between the 2 inner push rod tubes on the drivers side. You will have to remove that tin to replace the sensor or that wire. The wire does start from above the engine and it is common for it to cut by the tin or burned from the exhaust pipe.

Dennis 

Sent from my Windows Phone

-----Original Message-----
From: Rocket J Squirrel
Sent: Thursday, May 26, 2011 11:11 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Where can this wire be found?

On the watercooled 1.9L ('83, 84) vanagon, can the oil pressure switch
wire (blue with black stripe, bentley p. 97.56, current track number 29)
be accessed from the top of the engine compartment, and if so, where the
dickens is it?

--
Rocky J Squirrel
(Whose sig could mention that he hates climbing under the van, but doesn't)