Did a search and came up empty.

I have an autometer AFR gauge I installed, well half way. I have power to it. I need to get the signal wire tapped into the O2 sensors. Does anyone know where to do this at? Take it under the truck? Near the pcm? Also, does anyone know which wire I need to tap into? I think we have heated oxygen sensors with 3 wires? Any help is appreciated.

P.S. I know these gauges arent the best for tuning etc, but I still think it will let me know if I go way to lean for some reason. I plan to upgrade to a wideband once I eliminate my cats.

Thanks.

 

bump.

 

I used a pigtail from Casper Electronics.
https://www.casperselectronics.com/M...urbanSilverado

You just have to get the one with the correct plug for your truck.