where is the location of the plug for the upper H2O sensor on the passenger side? Mine somehow became unplugged and I can not find where it plugs into.The sensor is in the exhaust and has a plug but where does it connect onto the vehicle?

 

you mean 02 sensor?

it will connect to a wiring harness, and the plug will be somewhere around a foot away from the sensor it's self, probably coming out of a wire loom