i know this has probably been asked somewhere and i over looked it but anyway when i hook up my air/fuel guage do i connect the purple wire to the o2 censor wire or can i sauder it to the back of my ecu ive been told both but i go by what has been said by you all first. thnx

-THE noobie

 

I'd run it through the o2 sensor

 

yeah that is what i ended up doing and it gave me a good excuse to hide some other wires that i had for my "rice boy mods" lol i love red lights