Power for Heated O2 Sensor

t5montecarlo

MalibuRacing Junkie
Oct 21, 2007
4,632
31
48
Lederach, PA
garage-scene.com
I need to find the most appropriate under-hood "ignition on" power source for my heated O2 sensor. Looking at the wiring diagrams, I came up with the brown wire (10 amp fuse in panel) that feeds the oil pressure switch (the other side of the switch is the blue wire for the heated choke and tan wire for the dash lamp).

Has anyone else fitted a heated O2 sensor? What did you use for "ignition on" power source?
 

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