# air fuel ratio gauge auto meter

**URL:** <https://forums.speedlife.net/t/air-fuel-ratio-gauge-auto-meter/80795>\
**Category:** SON240sx Automotive\
**Created:** [March 29, 2004, 7:56pm UTC](https://forums.speedlife.net/t/air-fuel-ratio-gauge-auto-meter/80795 "2004-03-29T19:56:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![smokin\_sr](https://avatars.discourse-cdn.com/v4/letter/s/a4c791/32.png) [@smokin\_sr](https://forums.speedlife.net/u/smokin_sr)\
**Post date:** [March 29, 2004, 7:56pm UTC](https://forums.speedlife.net/t/air-fuel-ratio-gauge-auto-meter/80795/1 "2004-03-29T19:56:58Z")

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i have that stupid air fuel ratio gauge i am not sure where the signal line goes to… the oxygen senor in the sr 20 det has three wires which one is the signal line… does anyone knows  
thanks

john…

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**Author:** ![Green93SR](https://avatars.discourse-cdn.com/v4/letter/g/ecd19e/32.png) [@Green93SR](https://forums.speedlife.net/u/Green93SR)\
**Post date:** [April 5, 2004, 1:35pm UTC](https://forums.speedlife.net/t/air-fuel-ratio-gauge-auto-meter/80795/2 "2004-04-05T13:35:30Z")

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The colour is white. But put into the ECU harness. Look for SR20DET ECCS on Google search for the correct pin #.

Do you have a fuel computer? Get an EGT gauge. It’s way better. That way you can use it to tune your car.

Nate