Can I change a 1-wire sensor with a 2-wire?
connect one wire to ground but away from heat source,
the defective sensor with one sensor is connected to ground internally or through the thread..
the new one with 2 wire is also connected to ground but through the harness.
what you got is heated O2 sensor, the new one with 2 wires.
http://mr2.com/TEXT/O2_Sensor.html
Can I change a 1-wire sensor with a 2-wire?
You cannot splice the wires becuase they have different jobs (each wire has a specific task) and that will destroy your oxygen sensor. Go to a auto dismantler to get one for cheap. or a store.