I just went to replace the Oxygen sensor on my 95 wagon, and upon pulling up the carpet noticed the actual problem: The wiring on the 3 hole female plug (running to the car) has deteriorated and the green wire has broken. I proceeded to replace the sensor, due to its age, but now need to reconnect it to the car.

My questions: Is it enough to find a new plug, strip the wires, and reconnect? Or should i seek to replace all the whole wire?

I insisted my dealer install a new wiring harness before I purchased the vehicle based on its history of failure. Does this deterioration problem apply to all the wiring in the vehicle?