ok im wiring A B16 with a usdm civic harness (92) . question - i see two sensors on the back of the 2nd gen b16 longblock. one i know is a knock sensor. which one ? lower or upper? and what is the other sensor ? oil pressure ? thanks !

 

you are right. the oil pressure is the lower one it is directly next to the oil filter. the knock sensor is closer to the front of the engine (closer to the crank pulley) and a few inches higher