OK, im installing a air/fuel gauge to my 95 si, it has the 4 wire o2, from the air/fuel gauge theres 1 wire that has to go to the oxy sensor, which wire on sensor do i splice it into ??

 

if it comes with it's on o2 sensor why would you splice into your already existing o2 sensor?

On some PLX models there is a wire you can use to hook up to your ECU for reading a wideban o2 for tuning purposes but unless your tuning with it the feature is useless.

what brand/model is it?

 

i got the gauge for free so i just want to hook it up, and its narrow band so which wire ?? white?

 

it's narroband....throw it out bro. It's useless i promise you.

Unless you just want it for looks throw it at someone you don't like.

however if you insist

https://honda-tech.com/forums/showth...and+install+o2

search is your friend

 

i just want it because my son bought it for me , i just want to be nice and install it, so what wire white color ??

 

i think its c13 of the egs. not 100% sure however. your best off looking in a wiring manual