Long story short.....I discovered that I wore through two of the four wires for my rear o2 sensor.......unfortunately they are on the wiring harness end. Anyway, found a 4 wire o2 sensor plug for cheap and went to hook it up and noticed the wires are different. The wires in my hand are the ones from the cars harness.
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Two questions:

-Can I even use this plug being that the wires are different?

-If I can use it, which wires match up?