Oil Sump and Pressure Sender Unit Thread Info

[Anonymous]

Hello,

I'm trying to install oil temperature and oil pressure gauges. At the moment I'm at that 'buy all the bits' stage but am having a bit of trouble with thread sizes.

I'd like to install the temperature gauge sender unit in an aftermarket adapted sump plug, and the pressure sender unit using a T piece at the existing pressure warning light mounting point.

The problem is that I am unable to find the thread size of the sump plug and existing pressure sender unit. Does anyone know what these are, and does anyone know roughly where said sender unit is located on the engine?