AIT wiring question - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 11-10-2013, 04:09 PM   #1
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default AIT wiring question

Okay, so I have the AIT sensor kit and bung from DIY.

I'm looking at the instructions for installing things and it describes two wires going into the AFM connector, but I seem to have only one that came in the kit. Also, since the sensor wires are not connected on either end I'm not sure which wires go where.
Harv is offline   Reply With Quote
Old 11-10-2013, 04:25 PM   #2
Senior Member
iTrader: (1)
 
Onyxyth's Avatar
 
Join Date: May 2013
Location: Boyertown, PA
Posts: 719
Total Cats: 55
Default

huh?
You said AFM so I'm assuming you have a 90-93. This is pulled from Reverents instructions for installing a MS.

Quote:
On the US 90-93 1.6L (and European 94-97 1.6L), the GM sensor replaces the
sensor that is inside the AFM (Air Flow Meter). Disconnect the AFM, and pull
back the rubber boot of the AFM's connector. You should see 7 wires on it. The
GM IAT connects to the red/green and black/green wires. No polarity.
Just splice the wires, or use a spade connector, and extend those two wires to the wires on the end of the IAT pigtail (which is a red and a black I think). No polarity so it doesn't matter which to which.

Hope that helps.
Onyxyth is offline   Reply With Quote
Old 11-10-2013, 04:34 PM   #3
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

No, the point is that I have one wire in the kit and I seem to need two. There is no IAT pigtail with what I got. I got the IAT, the connector without any wires attached, and one wire. It seems like I need two wires coming off the IAT.
Harv is offline   Reply With Quote
Old 11-10-2013, 04:37 PM   #4
I'm Miserable!
iTrader: (1)
 
Join Date: Aug 2011
Location: SWFloriduh
Posts: 114
Total Cats: 9
Default

Cut the wire in half and you'll have 2.
The sensor takes 2 wires, polarity isn't important so no need to worry about both being the same color.
Boris is offline   Reply With Quote
Old 11-10-2013, 04:44 PM   #5
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

Quote:
Originally Posted by Boris View Post
Cut the wire in half and you'll have 2.
The sensor takes 2 wires, polarity isn't important so no need to worry about both being the same color.
Could work, I might have to get some more wire to get it up to the sensor location.

The other problem I have is how does this work?



The connector that goes into the sensor itself is obviously not hooked up to any wires. How does this come together? Those three tabs obviously came with the kit so I'm assuming they go into the connector, not sure exactly how though.
Attached Thumbnails
AIT wiring question-94c220e5-5747-4bf8-926b-22cfa001af6c-2657-000004c8f128c2f6_zpsd00288c5.jpg  
Harv is offline   Reply With Quote
Old 11-10-2013, 04:49 PM   #6
Junior Member
 
Join Date: Nov 2009
Location: Jax Fl
Posts: 469
Total Cats: 30
Default

Attach wire to pin, insert pin/wire combo into plastic connector.
Tw34k is offline   Reply With Quote
Old 11-10-2013, 04:55 PM   #7
Senior Member
iTrader: (1)
 
Onyxyth's Avatar
 
Join Date: May 2013
Location: Boyertown, PA
Posts: 719
Total Cats: 55
Default

^yup. Then use crimp style butt connectors and some extra wire to extend it over to the AFM area.
Onyxyth is offline   Reply With Quote
Old 11-10-2013, 04:57 PM   #8
I'm Miserable!
iTrader: (1)
 
Join Date: Aug 2011
Location: SWFloriduh
Posts: 114
Total Cats: 9
Default

Where did you mount the temp sensor that the wire in the picture won't reach ?
Boris is offline   Reply With Quote
Old 11-10-2013, 04:57 PM   #9
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default



I'm assuming one removes the back of the connector like I have in the pic, sticks the wires through the green plastic portion and then attaches them to the pin that then goes into the connector with the long flat side first?

I'm assuming that I crimp some portion of the metal piece, but I'm not sure which. Or do I just run the wire into the hole on the end?
Attached Thumbnails
AIT wiring question-11a31dd7-8b23-4775-96df-37aa2be9bbef-2657-000004ca00198e4c_zps71092b3f.jpg  
Harv is offline   Reply With Quote
Old 11-10-2013, 04:58 PM   #10
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

Quote:
Originally Posted by Boris View Post
Where did you mount the temp sensor that the wire in the picture won't reach ?
In the end tank of the intercooler. I haven't measured the wire, but I'm assuming if I cut it in half I can make it over to the AFM connector. If not I can always get more wire.
Harv is offline   Reply With Quote
Old 11-10-2013, 04:58 PM   #11
Senior Member
iTrader: (1)
 
Onyxyth's Avatar
 
Join Date: May 2013
Location: Boyertown, PA
Posts: 719
Total Cats: 55
Default

You crimp the side that looks crimpable, the other end is a pin that slides into the sensor itself.. c'mon man.
Onyxyth is offline   Reply With Quote
Old 11-10-2013, 05:01 PM   #12
I'm Miserable!
iTrader: (1)
 
Join Date: Aug 2011
Location: SWFloriduh
Posts: 114
Total Cats: 9
Default

Damn, that's a bit far.
Keep that wire as short as possible.
Boris is offline   Reply With Quote
Old 11-10-2013, 05:01 PM   #13
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

Quote:
Originally Posted by Onyxyth View Post
You crimp the side that looks crimpable, the other end is a pin that slides into the sensor itself.. c'mon man.
I'm sorry! It did seem obvious, but damned if I haven't made mistakes before. It's also not exactly plug and play. The orientation of the thing and how it is supposed to go in is not obvious. Is there any necessity for it to go in a certain way?
Harv is offline   Reply With Quote
Old 11-10-2013, 05:02 PM   #14
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

Quote:
Originally Posted by Boris View Post
Damn, that's a bit far.
Keep that wire as short as possible.
Everything I got on here was saying the end tank is the best place for the AIT.
Harv is offline   Reply With Quote
Old 11-10-2013, 05:52 PM   #15
Senior Member
iTrader: (1)
 
Onyxyth's Avatar
 
Join Date: May 2013
Location: Boyertown, PA
Posts: 719
Total Cats: 55
Default

As long as the pins make good contact with the sensor when its plugged in, everything is fine.

The end tank of the intercooler is a good spot for the IAT.
Onyxyth is offline   Reply With Quote
Old 11-10-2013, 06:39 PM   #16
Junior Member
iTrader: (6)
 
Join Date: Dec 2008
Location: Boulder, CO
Posts: 291
Total Cats: 7
Default

Those crimp pins don't look like the correct ones for that connector (see if the pins actually mate up with the pins on the sensor). I believe the pins should be female.

Also, for this particular connector (GM IAT), you put the wires through the rubber seal, then through the connector. Then you crimp on the pins and pull the wires back. The pins snap in from the front of the connector, not the rear.

--Ferdi
ftjandra is online now   Reply With Quote
Old 11-10-2013, 07:00 PM   #17
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

This is kinda what I was asking, it doesn't seem obvious how the damned thing is supposed to work.

It doesn't look like the connectors really fit very well either way. I ended up crimping the wires on and putting them in through the back of the connector (after putting the wires through the rubber) with the tab part sticking into the front. I have no clue if this is right or not.

I kinda wish the kit had come with a pigtail connector.
Harv is offline   Reply With Quote
Old 11-10-2013, 07:07 PM   #18
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

The connector on the AIT sensor itself just has a couple of pins sticking out.
Harv is offline   Reply With Quote
Old 11-10-2013, 07:18 PM   #19
Junior Member
iTrader: (6)
 
Join Date: Dec 2008
Location: Boulder, CO
Posts: 291
Total Cats: 7
Default



That is what the pins should look like.

--Ferdi
Attached Thumbnails
AIT wiring question-iatwconn_med.jpg  
ftjandra is online now   Reply With Quote
Old 11-10-2013, 07:22 PM   #20
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

Quote:
Originally Posted by ftjandra View Post


That is what the pins should look like.

--Ferdi
Well, it's all DIYAutotune what I've gotten so dunno.
Harv is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Buzzing from driver side of engine bay? (MS3 install) nick470 MEGAsquirt 7 06-16-2017 02:53 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
MSPNPPro-MM0105: Coolant Temperature Output slomiata MEGAsquirt 5 10-07-2015 02:11 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM
wiring wideband ground to battery terminal btabor ECUs and Tuning 10 09-28-2015 06:33 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:27 AM.