This dimwitted moose agrees!!.  But there are 
dozens of used VDO electric Oil pressure gauges 
on ebay and likely in your local junkyard.  The 
old 80's model Audis had them in there and some 
had 2-3gauge plastic panels for temp and voltage 
too.  Golfs, Sirroccos, Jettas.  Most of the VDO 
sending units for temp and pressure have markings 
on them like "150C or 0-19BAR to make sure you 
have the right sending unit for your gauge 
range.  Worst case, you'd have to buy a new sending unit.

On my old Bay window bus, I rigged up an oil 
pressure switch from a Chevy Vega.  It had 3 
prongs on it.  One for the sending unit and the 
other two ran through the ignition coil.  If the 
pressure ever dropped below like 10psi, the 
switch would kill the engine.   It worked too, as 
when I would have fresh oil from an oil change, 
the starter would roll and roll until the needle 
got above 10psi and then the engine would start right up.

Maybe other cars use this too, but at the time 
back in the 80's the Vega part was easy to find.

YMMV

DM&FS

At 04:29 PM 4/8/2011, Jeff Schwaia wrote:
>Ah Crap!  Looks like they're out of stock right 
>now...  Give them a call, perhaps they'll have more soon.
>
>Cheers,
>
>Jeff
>
>
>-----Original Message-----
>From: Jeff Schwaia [mailto:vw.doka@gmail.com]
>Sent: Friday, April 08, 2011 2:27 PM
>To: 'Rocket J Squirrel'; 'vanagon@GERRY.VANAGON.COM'
>Subject: RE: I guess if I'm putting on a tencentlife oil cooler . . .
>
>Rocky,
>
>Make life easy for yourself, and Bullwinkle, and buy the kit from Van Café.
>
>http://www.van-cafe.com/home/van/page_362_263/oil_pressure_gauge_kit.html
>
>
>Come with everything you need.
>
>Cheers,
>
>Jeff
>
>
>-----Original Message-----
>From: Vanagon Mailing List 
>[mailto:vanagon@gerry.vanagon.com] On Behalf Of Rocket J Squirrel
>Sent: Friday, April 08, 2011 1:04 PM
>To: vanagon@GERRY.VANAGON.COM
>Subject: I guess if I'm putting on a tencentlife oil cooler . . .
>
>...I might as well look into rigging an oil pressure gauge. Anyone got a
>handy kit or anything?
>
>1.9L AT.
>--
>Rocky J Squirrel
>'84 Westfalia: Mellow Yellow ("The Electrical Banana")
>'74 Westrailia: (Ladybug Trailer company, San Juan Capistrano, Calif.)
>Bend, OR
>KG6RCR