99 Civic o2 wiring problem

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New Member
recently baught a 99 civic, has a d15b block with y8 head, and ecu from a d16y8, the harness has only 2 wires for o2 sensor, my o2 sensor has 4 wires, how can I wire this up? also can anyone tell me what kind of harness it may be, I already know its the wrong harness
This is specifically about going from a 1 wire to a 4 wire, but should be useful for you as well

My assumption is that you have the white and green wires but will need to add the 2 black wires for the O2 sensor pre-heater