Where's the oil pressure switch and detonation sensors?

[S13 Silvia]

As the title says, I can't the find the oil pressure switch or the detonation sensor's on my r32 rb20det. Can anyone help?

[SteveL]

Oil pressure switch/sensor is right next to the oil filter (or should be:)).

There are 2 knock sensors on the RB20DET, they are screwed into the inlet manifold side of the engine block just below the head gasket line (top of the block). There is one approximately in line with cyl #2 and one at cyl #4. They are quite hard to see with the engine installed in the car.

[S13 Silvia]

Thanks dude. I think I've seen the oil pressure switch before, just wasn't sure if it was that or the detonation sensor. I can understand why I didn't see the detonation sensor's now as they would be quite hard to see directly under the manifold.