How do you wire in a O2 Sensor? KA

[Gary240sx]

I just bought a 1996 240sx S14, and I noticed that the O2 sensor was cut. The wires comming from the O2 are white, white, and black. And the wire comming from the harness are blue, brown, and black. Can anyone tell me which wires connect with which?

Much appreciated!

[ultimateirving]

The black is most likely ground. Turn the ignition on and probe the white
Wires where it's cut. The one that is 12v is the o2 heater. The other wire is the signal then.

[Kingtal0n]

And if you get confused just remember you only need to connect the one single signal wire for it to work. the other wires on a 2,3,4 wire O2 sensor are just for quicker warm ups.

[S14DB]

And if you get confused just remember you only need to connect the one single signal wire for it to work. the other wires on a 2,3,4 wire O2 sensor are just for quicker warm ups.

:picardfp:

Anyways, on the sensor, White/White is the heater circuit. The black is the signal.

Is this the actual engine harness or the O2 pigtail? blue, brown, and black is not factory.