got a narrow band 02 sensor (autometer) and would like to install it on either one of my front 02 sensors (before the cats) I have had some error codes thrown saying it is running lean and I want to see if I can see where

my question is: the guage needs to be hooked up to the 02 sensor HIGH SIGNAL wire, what color is that on the front 02's? are they a 3 or 4 wire?

thanks

 

I hate to say anything because I'm not 100% sure but I think I hooked mine up to the purple wire.

 

Purple wire i just hooked mine up a few days ago. The purple wire im positive on that. Hope that helps. Get yourself a haynes book. Very helpful when it comes to wiring.

 

thanks a ton guys, I knew you boosting guys would know, I am going to hook wires up to either side and switch between left and right banks