95 civic cx b18c swap wiring help

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I have a 95 honda civic cx, I currently have the one wire o2 sensor, I bought a complete front clip off a sir-g. I will be using everyting engine and engine harness. I was wondering do I have to still run the wires for the o2 sensor since my cx only had 1 wire o2. Im guessing just run the wires from the 4 wire straight to the ecu. Im not sure if its done already or not. Let me know any help is appreciated.