99 Civic o2 wiring problem

[d15bVTECC]

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

 

[E_SolSi]

This is specifically about going from a 1 wire to a 4 wire, but should be useful for you as well

1-wire to 4-wire o2 conversion

If you bought a CX or DX civic with a 1-wire o2 sensor, you're going to have to convert to a 4-wire to run a b-seires ecu, and most of the "top of the line" d-series ecu's like the p28. First things first, you need to physically buy a 4-wire o2 sensor. you can't send a heater signal to a...

hondaswap.com

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