# O2 sensor and air fuel guage

**URL:** <https://forums.speedlife.net/t/o2-sensor-and-air-fuel-guage/81040>\
**Category:** SON240sx Automotive\
**Created:** [May 26, 2004, 12:16am UTC](https://forums.speedlife.net/t/o2-sensor-and-air-fuel-guage/81040 "2004-05-26T00:16:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Born2drift](https://avatars.discourse-cdn.com/v4/letter/b/35a633/32.png) [@Born2drift](https://forums.speedlife.net/u/Born2drift)\
**Post date:** [May 26, 2004, 12:16am UTC](https://forums.speedlife.net/t/o2-sensor-and-air-fuel-guage/81040/1 "2004-05-26T00:16:43Z")

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hey,  
im wiring up a air/fuel gauge and wondering which wire is the signal wire on the Sr20det O2 senser (3wire)  
thanks  
Chris