I have the Techedge v1.5 WB unit. This unit comes with a narrow band output feature. If I have understood this feature correctly, it will enable the factory PCM to use the 02 readings from the WB unit. I just do not know which wires to tie into???

 

i have FJO WB kit. although i still haven't used it yet. maybe this narrow feature can be read only by the laptop your are using to monter the O2 i mean by the program provided for the Techedge kit. i don't think the PCM can read that unless you can connect the WB O2 sensor of the techedge kit with the wiring harness for the O2 of the pcm in some way. maybe you need an adaptor that has three plugs so that you can plug the WB O2 sensor to PCM O2 wiring and the techedge wiring.

 

I think he's asking which wire(s) on the stock narrowband sensor is the signal wire. You may want to contact Peter at techedge, and explain the situation, or possibly the yahoo support group. I have a manual at home that has wiring diagrams for the LT1 fbody. I'll look at it and try to help you out later if someone else doesn't beat me to it first.

 

Ok, according to my Haynes manual, for 1995 and older models, Sensor 2 uses Tan for sensor LO, and purple for sensor HI, sensor 1 uses Tan/white for sensor LO, and purple/white for sensor HI. Hope that helps you out.