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Z32 maf install + wiring info

Posted: Thu Jan 24, 2008 4:13 pm
by rob 2fast4u
well I decided to do a small write up since I was at it.

This is how to wire in a z32 maf ( n62 ) into the factory s13 wiring harness

this is the stock conector :
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and the z32:
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cut the harness off the old connector and start soldering the wires from the z32 connector together. Make sure you get good penetration with the solder and shrink wrap it when your done.
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Here is a diagram that I made. From searching on the forum Im almost positive this is how you wire the two together if not PLEASE TELL ME !!!!! and I will make the changes.
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Posted: Thu Jan 24, 2008 4:35 pm
by boker240
i hope for ur sake u soldered that stuff and heat shrunk tubing over that. if it gets moisture in there ur ****.

Posted: Thu Jan 24, 2008 4:37 pm
by rob 2fast4u
ya I did and I even lengthend the sheilded wire right up to the conector.

Posted: Thu Jan 24, 2008 4:55 pm
by boker240
:cheers: its nice to here that someone's doin **** the right way.good job.

Posted: Thu Jan 24, 2008 5:03 pm
by rob 2fast4u
haha thanks man... ah just wondering, in the background you can see the engine harness ... I am taking all my idle control off the intake and all the emissions is already off but to make the harness look abit cleaner can I just cut off the wires I dont need and tape them up or something like that so there not in the way ?

Posted: Thu Jan 24, 2008 6:21 pm
by boker240
id imagine, as long as their to somthing thats not gonna b hooked up.

Posted: Fri Jan 25, 2008 2:45 am
by SR_what?
Quick question.
Some diagrams show both grounds going to the wiring harness and others (like yours) show one going to the chasis. Whats the worse that would happen if you dont have one going to the chasis? Im guessing it would just cause your car to stumble and **** at high rpms.
Also, what gauge wire did you use to connect to the chasis?

Posted: Fri Jan 25, 2008 12:40 pm
by adamky
SR_what? wrote:Quick question.
Some diagrams show both grounds going to the wiring harness and others (like yours) show one going to the chasis. Whats the worse that would happen if you dont have one going to the chasis? Im guessing it would just cause your car to stumble and **** at high rpms.
Also, what gauge wire did you use to connect to the chasis?

I connected both the grounds together and connected them to the wiring harness ground. No problems yet.

Posted: Fri Jan 25, 2008 3:14 pm
by boker240


I connected both the grounds together and connected them to the wiring harness ground. No problems yet.
i did the same **** , not a prob.

Posted: Fri Jan 25, 2008 3:44 pm
by SR_what?
^^^ Cool. Thats what i was hopin to hear. I already wired mine that way and just wanted some reasurrance. Thanks dudes.

Posted: Sat Jan 26, 2008 12:55 am
by rob 2fast4u
Ya theres not a really a YOU SHOULD DO THIS when wiring the two ground wires, some people take one ground the the chassis some others just attach both together to the harness. I guess it depends on your preference, I have "heard" or "read" that some people had issues with wiring them in together but so far adamky said he's not having any issues yet so looks to be alright

Posted: Tue Jan 29, 2008 10:23 pm
by 808racer
is it possible to wire the z32 maf into my harness and still use my KA? i'm just planning ahead and slowly gathering parts and knowledge, so i figured this is one less step to do. thanks

Posted: Wed Jan 30, 2008 7:49 am
by hotrodstu77
well most of us here are/will be using the z32 maf because it flows more and it works with tuned ECUs but your ecu must be tuned for it. cant do it with a stocker. and i hope this gets locked in the how to section. its very helpfull

Posted: Wed Jan 30, 2008 4:29 pm
by 808racer
thanks for that..maybe i'll just buy one and wait untill i do have all the parts needed. and i agree this should be moved to the how-to section

Posted: Wed Jan 30, 2008 5:09 pm
by hotrodstu77
thts what i did. always good to have one

Posted: Thu Jan 31, 2008 6:59 pm
by kingkong8247
I talked to JWT about grounding it to the chassis. They told me it is not needed, if grounding it to the chassis fixes the issue it is because there is something wrong with your wiring harness.

Oh and +1 on the writeup, very nice!

Posted: Thu Jan 31, 2008 8:18 pm
by rob 2fast4u
^ Alright thanks for clearing that up, Its to bad its freezing out here... or else I would have my car running by now. Theres soo much work ahead of me....

And also thanks to everyone for the reply's!!!!!!!!

Posted: Fri Feb 08, 2008 2:20 am
by wntrcoatblu240
nice.. very nice write up indeed... one question... what would happen if you accidently mixed up the maf signal and 12v wires and started the car? because i think that's what i did.. i was confused on how to wire up the maf from JWT website, and i think i got it backwards... did i fry my maf?!

Posted: Wed Jul 30, 2008 10:09 am
by s-14
Hey anyone able to help i wired my n62 from top of maf to top of stock plug is that right

Does white go to white or am i wrong or does black/grey go to white!!! i followed

one of the how to's and now im not sure the hwo to was right i checked and double

checked to see if the plugs on the pic's he posted were the same. my car idls like crap and

smokes out of the exhaust real bad ( its not the turbo ) let me know thx.

Posted: Fri Aug 01, 2008 7:57 pm
by Serebros3
i vote this for STICKY!

Posted: Sun Aug 03, 2008 7:41 pm
by s-14
ok nvm! here is for the new people that dont know how to wire i'll make it clear white goes to white and black/white goes to black/white and the two in the middle go to ground on the s14 wire ok there you have it. I wired it wrong due to someone's post that was incorrect so my car idled like sht but i didnt damage it lucky me thanks though, but now it runs fine.

Posted: Mon Aug 18, 2008 2:15 pm
by twastheglow
Sorry to revive this. I know the diagram at the top is pretty self-explanatory, but I have a question since my car runs like ass and I think my MAF may have something to do with it. When wiring the Z32 MAF in, you connect white to white...striped to striped...then I connected the orange to the black...and grounded the Z32 black. That is correct right? I've been having problems since my install soI want to narrow down all the possible problems. And it's suppose to read 1.3 volts @ idle? Is this all correct?
*mike*

Posted: Tue Sep 23, 2008 6:25 pm
by ImporT-ProphetZ
good stuff!!!!

Posted: Fri Sep 18, 2009 1:26 pm
by dppflyinhawaiian
will this wiring work and be the same for the s14 wiring harness when i install the z32 maf?

and when you say a tuned ecu is needed, who can i take my ecu to, to get it tuned in So.Cal? ive heard of enthalpy and JWT?

Posted: Thu Apr 01, 2010 9:57 am
by nissanfanatic911
hi guys, i have a 96 nissan 240 i put a z32 mass air on but im working on a friends s13 sohc how will you wire the z32 to this car? the same as my s14? any help would be appriciated..

Posted: Thu Apr 01, 2010 11:24 am
by Jordan Gladman
Exact same as this one.


For anyone interested interested in "salvaging" their OEM harness and not cutting off their stock MAF plug, if you have an extra TPS sensor, you can chop it up and use the female receptical to make an adapter cable to go from the Z32 to your OEM harness without having to cut it. I did mine this way and it saves you the trouble of having to ever rewire to go back to stock for whatever reason.