Im looking at buying 2 more gauges to fill in my 3 x gauge pod.

I already have a boost gauge, Im down to basically 3 options, I want to stay with apexi, and gauges are 60mm

The three gauges im looking at are
-Water Temperature
-Oil Temperature
-Oil Pressure

Ive pretty much decided Water temp. is one of the ones i want to get, but can anyone tell me how the sensor is fitted, or more to the point, where it is fitted?

As for oil pressure and temp. as I understand, they are slightly more complicated to fit?

Oil temp and pressure would be fitted through a sandwich plate between the oilfilter and the block.