This is the schematic. You dont have to do all of it since you have a working 02 sensor.
Just use half of it - the capacitor and 1MOhm resistor. I cut the 2 wires that are for the signal and ground and splice this instead. IDK where the rear o2 sensor harness goes in the body, but for 7g is right under driver's seat. Thats where I did it and tucked it away in the center console. Leave the heater wires alone. Just find out which wires are for the signal and signal ground
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