I’m in the process of adding two Spartan 2 O2 sensors to my carbureted flat 6 engine. One for each bank. I have a couple of questions.
I’m wiring power to the O2 sensors directly from a keyed 12v source. I’m wondering if the sensors will be damaged if I leave the key in the ACC posiiton without actually starting the car? Or does the heater internal to the O2 sensor shut off when it reaches a certain temperature? I’m curious if I should add a dash switch to disconnect power to the sensors in case I want to leave the ignition in ACC position.
If I were to run separate 12v feeder lines from the fuse panel to each sensor, what gauge wire should I use? Alternately, if I was to run 1 wire from the fuse panel and then branch off this feeder line to each O2 sensor. What gauge wire should I use for the feeder line in this scenario?
Lastly, what are you guys using for the LED light that is supposed to let you know whether or not the O2 sensor is running at the right temperature. I didn’t see an LED in the package I received.