I ended up using my m20 harness with the swap and bought a brand new m30 o2 sensor. I cut off the m30 o2 sensor plug and I am going to wire it into the m20 harness. Does anyone know what wires go to what? On the left is the m30 plug. I know that the Blue/Green wire go together and the 2 Brown wires go together. The M20 harness has 3 additional wires whereas the m30 plug just has 1 more wire.
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