knock senser or oil pressure cut off ???

[body damge]

intake side of the motor in front of the oil filter its a small stud sticking off and it screws into the bloc 1/2 way between the motor mount and the timing cover 3/4 the way down the block closer to the oil pan, motor is not in the car i swaped it in a b2200 truck just wondering if its the knock senser or maybe the oil press shut off had a diff car that no spark tell it got oil press just curius any help thanks

[Mazda Carnage]

The oil pressure switch is centered above the oil cooler, the knock sensor goes on the drivers side of the oil cooler(left in picture), on the passenger side of the oil cooler there is the turbo oil feed line (lower hole) and bracket for the oil feed line (upper hole sits out as far as the spot for the knock sensor).