The electric gauge will come with a sending unit that replaces the
pressure activated on-off switch and it should be a screw-in
replacement. If you didn't remove the sending unit from the Jag,
you'll need to go back and get it.
After installing the electric oil pressure gauge on my Spitfire I
removed a 3/8-24 bolt from the oil passage at the back of the head
and, using a 3/8-24 to 1/8 NPT adapter, mounted the old pressure
switch at the back of the head. As long as the idiot light is out I
know that I have at least some oil pressure to the valve train/rocker
I checked the function of the idiot light immediately after shutting
the engine down and found that the light comes on just as the oil
gauge swings past 20 PSIG.
Subject: Electric Oil Pressure Gauge
Author: Tom Carney <firstname.lastname@example.org> at CCGATE
Date: 5/12/98 4:05 PM
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Wow four junkyards and none with any LBCs! Guess they
don't like em in MA. I did manage to find a XJ6 with nice
guages(need to fill in the holes the DPO maid on the
dash). So my question is this. I have a 68 GT6 and I was
wondering how to wire up the electric oil pressure guage.
I suppose I would have to remove the existing oil pressure
warning switch but what do I replace it with?