Engine airfuel ratio gauge????

airfuel ratio gauge????

i got the air fuel ration gauge i got a 1999 corolla i dont know how many cables are they in the oxygen sensor but can anyone tell me where do i plug it the cable from the gauge thanks...

thanks let me know my car has 2 black, one white and one blue

it's the blue one. That's the signal wire. The two black ones are for the heaters and the white one is probably a ground - or vice versa. Anyhow, blue is your color, I'm almost positive.

Trav

thanks you where right the blue one is the rigth one it works