High or low pressure oil sender switch?

It's at the end of the blue wire (and needs replacing).

Thanks!

The switches are colour coded, white 1.8bar and brown 0.3bar and prob also have rating stamped on them if you remove them and have a look see.

Thanks.  Mine is white, so will order that one (thought they might be colour coded, but wasn't 100%).

High pressure sensor near the oil filter as that is where the oil pressure is high as oil is pumped through the filter and low oil pressure at the side of the head as the oil pressure is a lot lower up there.  

I was told to put them both on the oil filter with a tee piece.

Pete thats because you have a 20v

for an 8v what you have there is correct, big white switch 1.8 bar at the back, smaller white switch 150 degree oil temp sender for MFA on the left