02 sensor wires

[eazya31]

hi guyz i recently had a very serious issue with car not idling all of which is solved,now i hv another issue its the o2 sensor it is not connected to anything.i checked around and found some diagrams but they only tell u tht the brown wire from the ecu goes to the o2 sensor but it is a 3 wire esnsor so where the other 2 wires.please somebody help me with this.

[jey_253]

If the 02 sensor has the factory plug on it, there should be a spare three prong plug laying around on your harness that you will probably have to extend

[ItzGenX]

The ECU only needs to meter one wire for a signal. The other wires are for the heater control built into the sensor.