On my 87 2.1l, I installed the oil temp sensor in the oil drain, replacing 
the oil drain plug. Had to manufacture a "thin wall" socket to install and 
remove the sensor because the oil drain plug is recessed into a small round 
area. Don't know about the 1.9 case.

To install the pressure sensor, you have to run some tubing up to the top 
of the engine and install a T fitting to accommodate the sensor and the old 
idiot light sensor. You should a sensor that is compatible with whatever 
gauge you are using.

You might search the archives for a detailed account of my experience 
installing these two sensors. I think it was posted sometime in June 1996. 
Better yet, I'll forward it to you if I can find a copy.

-Mark McCulley

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>From: 	John Brown[SMTP:jlbrown@u.washington.edu]
Sent: 	Monday, July 29, 1996 10:40 AM

=========================================================================
Date:         
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         
Subject:      oil pressure/temp sensor location

I am trying to install oil pressure and oil temp gauges on my 1984 1.9L
Vanagon engine.  I have a couple of questions that I hope someone can
help me out with:

1.  I cannot find any location to install the screw in temp
    sensor that I bought.  Has anyone installed an oil temp sensor?
    If so, where did you install the sensor.

2.  The pressure sensor that I bought is quite large.  It doesn't seem
    like it will fit in the small space between the push rod tubes on the
    left head.  Is there an alternate location, or do I need to get
    another sensor?  Is the resistance of these sensors universal, so I
    can use any sensor?

3.  I would like to preserve the idiot light function in addition to my
    new gauge.  Can I just use a brass t-fitting and screw both sensors
    into the t and screw the t into the crankcase?

I hope somebody can help solve the frustrating problems!

Thanks,

John Brown