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hey im installing my A/F ratio guage i just bought of a buddy and im putting it in my vent in the dash. just waiting for the contact cement to dry. but it has 4 wires
red-power
black-ground
white-12v switchable for the light?????????
purple-o2??????????????????????????
so if someone could tell me if the purple or white wire go to the o2 please. its an autometer

these a/f guages are a narrow bands and only really good for WOT (wide open trotle) other than that they are worthless. Its not worth the $60 they cost new, better off with a wideband they are just costly but worth it but not for the everyday stock car. but if u must know

white-12v switched
purple-o2

what u have is correct so carry on.

thanks, so their not even somewhat accurate at anything under WOT? i got it for 5 bucks and it fits right in where my vent was. do u know what i would hook up a oil pressure gauge too?

i think most people have to T off where the factory oil pressure switch is.

so there is a factory oil pressure swith then? i hought there wasnt as there was no oil pressure gauge

so there is a factory oil pressure swith then? i hought there wasnt as there was no oil pressure gauge

There is no factory gauge.. but there is a factory idiot light that comes on when your oil pressure hits zero.. its more like a "You're Screwed" light though cause usually if you see it.. its already to late.

Tunes67