Wiring question Did search

[johna_99_99]

hey guys i searched butt he question was never answered....i just the 95 300zx tt oxygen sensor for my red top............on the 300zx o2 sensor there is 1 blue and 2 black wires. The stock wires are red black and white. now i know from t he instructions that the blue wire is ECU signal which i beleive i have to connect to the white wire on stock wiring? now how do i know where the 2 black wires hook up......does it matter which one goes to red and black on stock wiring???????

[johna_99_99]

in the instructions it says the 2 black wires are heater wires?(ones on 300zx o2 sensor) isnt one of these supposed to be ground??

man this sucks...i need to get this hooked up asap...thanks guys

[johna_99_99]

ok what i did was spliced the blue wire with the white wire......and then just spliced the 2 black wires with red and black.....is this correct?

[NY S13 SR]

Should plug right into the SR harness, if it doesn't you may have the wrong sensor. Polarity for the heater circuit cannot be reversed or it will not work properly with the SR. Most other engines you can reverse polarity with no problem, but the SR is different.

____________________Jeff Hhttp://www.heavythrottle.com

[johna_99_99]

the sensor did not come with a harness....only the wires.....i had to splice them in.....im just not sure which wires to splice

[johna_99_99]

the first time i spliced it into the white wire...i dont think this was right....i think i had to splice into the black one.......could this have affected anything? the first time i had it in wrong....i started the car and something happened.....the car backfired a little and the revs jumped.....

[NY S13 SR]

Be careful you can fry your ECU if it is wired wrong.

If the sensor you got doesn't have a plug, return it and get 22690-19P20 that is an exact fit with the correct plug.

We have them in stock if Nissan doesn't.

________________Jeff Hhttp://www.heavythrottle.com

[johna_99_99]

well i think i fried something because im not getting 12v at the power pin anymore.....the car still runs but it will be impossible now for the 02 sensor to work.......i dont know what to do anymore...i think ive had it with this car.

[johna_99_99]

holy ****....ok i just looked at the 3 o2 wires down the line and they all melted! i think what happened was the wires might have been touching when the car was running...i cant beleive this!!!!! would this have fried my ecu or did it just melt the wires and i have to rewire it?

[PhopsonNY]

Check out this link.

You need the thin type Titania sensor

http://www.sr20forum.com/showthread.php?t=124479

good luck