Air/fuel ratio wire @ ecu?

[Turboed240]

Anyone know which wire I can tap into at the ecu on an s13 redtop for an autometer air/fuel ratio gauge?

[Oneor1]

You need to tap into the Oxygen sensor wire comming out the exhaust manifold.

Rick Johnson92 coupe

[Gmans13]

what wire. My o2 sensor has 3 wires red white and black. Let me know. Thanks

I too have a s13 redtop

[battle D]

let me know also, and u can connect it to the ecu cant u mine is connected to the oxygen sensor and tis not working its a very dim red but i need to figure out how to hook it up to the ecu

[Tartan]

I had that same problem when I had one...I heard that the autometer gauge isnt compatible with the o2 sensor on a red top.

[Gmans13]

why would it be any different with an auto meter gauge and a different brand. Don't they all do pretty much the same thing? I don't have an autometer gauge but it sounds the same to me. 3 wires. one power one ground and one that goes to the o2 sensor. I'm going to look in to the wire colors to see if I cant just splice in to the main harness next to the ecu. I'll let you guys know.

[battle D]

why wouldnt it work i ahd my first swap done at unstalbe hybrids adn they give u a vdo boost gauge adn autometer a/f gauge adn it worked fine but i dont remember where it was connected

[Gmans13]

hmm...do you still have the car? If you do you should run outside and check for me.

[Gmans13]

does anyone know where to find out what colors all the wires are in the harness. I've looked at it before but I cant find it. Thanks

[Gmans13]

http://www.nissaninfiniticlub....47985