anyone know the pin # that the a/f ratio gauge connects too.. on a 97 Z

 

You mean O2 sensor? You have 4 to choose from, although I imagine your looking at the front 2.

 

yea i guess high bank 1 sensor 1 to get a good read for the gauge...

 

One side is a purple wire, and the other side is a purple wire with a white stripe. Can't remember which side is which, and I'm not anywhere I can look at my Chiltons. They are in connector "C" pins #8 and #20. You can also splice into the harness wire closer to the O2 sensor. Just don't cut the leads on the sensor.

Also, consider picking up a lead from both sides, running them to a single pole-double throw switch, allowing you to monitor either side. I'm sure you are aware that the stock O2 sensors are not very accurate at anything other than 14.7:1/stoichiometric A/F ratio used at idle and low load/part throttle, so they don't produce a whole lot of meaningful results when you run at the richer A/F ratios you need at WOT.

 

thanks.. im thinking its the purple/white...cause thats what it is for my 99... but its pin #69...

that double throw switch sounds like a good idea... you wouldnt happen to know where i can pick up a switch that small

 

Doesn't matter what size switch you use. Radio Shack has a selection ranging from sub-miniature to "normal" in SPDT. Depends where you want to fit it.

 

on the pcm, there are 4 connectors... red, gray, black and blue... which one is connector C, cause they all have a purple/white stripe wire..HELP PLEASE