Technical Oil feed thread size

[maniacbravo]

Hi,

Does anyone know the size of the thread of the two plugs near the oil cooler/ oil filter as shown in the picture below. This is on a 1.9td 75.

 

[franglais]

no, but i'm curious as to what you hope to achieve with them, they don't serve any purpose AFAIK, their use as drain plugs is very limited, they we're perhaps there for some option which was never used.

 

[maniacbravo]

the previous owner installed an oil pressure gauge in the car which isn't connected to anything, except the positive and negative to look nice and shiny, and I hate having things not working in my car, so I need to know the thread size so I can get myself an oil pressure sensor (that can run a gauge, not the on/off type) to run the gauge off it.

Edit: Also as I'm so close to an oil change, I don't want to remove one to confirm the thread size, then have a week without the car before I get my hand on an oil pressure sensor :/