Ive been helping someone out with a b16 crx that they bought. I need to know what pin this wire goes to on the harness because the wire is broken and i cant find the other end.
Thanks

 

My only guess is that i should connect it with the oil pressure wire because that wire was broken. I have that connected now. I connected the blue wire to the oil pressure wire (was broken too).

 

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the white wire in that connector is for the O2 sensor

oil pressure sensor wire should be yellow with a red stripe

the only blue wire is for the tach signal, however there is another one for the Fast Idle Control Valve on the 89-91 Si, which doesn't occur on the DX/HF

 

To properly figure this out, you should be hooking a meter up to the broken end of the wire and probing the ECU pins for continuity.
Then take a look at an ECU pinout schematic and see what it is for. Really easier than it might sound.
People can tell you what they think it "should" be just from your pictures, but when you buy somebody else's project car you are also buying all their mistakes.