I replaced my cat sensor with an aftermarket a long time ago and spliced the female connector off and wired the sensor directly to the harness. Well that didn't work very long. So now i bought an aftermarket sensor but with the male connector. So now I have to rewire the female end to the harness. My problem is I dont know about a couple of wires.

Harness has: Green, Green&yellow, Black, Black
Sensor has: Grey, Black, White, White

Obviously the 2 black go with the 2 white. I know that the grey wire on the sensor is ground and the black wire on the sensor is signal. I just dont know what the green&yellow and solid green wires are on the harness. I hate driving and looking at my check engine light while my gas gauge seems to be moving faster than usual. If anyone can help I would really appreciate it!