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Old 02-02-2010, 06:38 PM   #1
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Default AEM - Patch Harness for Miata's

After careful searching I had to change my title and description since this may be old news.


I see that these are genuine AEM patch harness's. Maybe you've seen these before maybe you haven't - it was news to me as of poking around on ebay today.........






Mazda Miata ECU Patch/Jumper/Extension Harness 2001-05

Mazda Miata ECU Patch/Jumper/Extension Harness 2001-05 : eBay Motors (item 230419449925 end time Mar-03-10 17:47:52 PST)


Mazda Miata ECU Patch Jumper Extension Harness 1990-00

Mazda Miata ECU Patch Jumper Extension Harness 1990-00 : eBay Motors (item 230419449916 end time Mar-03-10 17:47:51 PST)

Last edited by Landrew; 02-02-2010 at 06:58 PM.
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Old 02-02-2010, 07:26 PM   #2
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de-noob me a bit....
what does this do...why would I want one?
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Old 02-02-2010, 07:33 PM   #3
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It turns potassium into vermacite which increases the turbidity of the bernoulli principle.....in theory....but in a labratory they have only been able to increase the viscosity of wolfram.
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Old 02-02-2010, 08:00 PM   #4
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looks like an extension... so it would work with even the stock ECU in case you wanted to relocate it.
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Old 02-02-2010, 08:28 PM   #5
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Quote:
Originally Posted by shlammed View Post
looks like an extension... so it would work with even the stock ECU in case you wanted to relocate it.
Or create a patch harness for an aftermarket ECU.
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Old 02-03-2010, 09:31 AM   #6
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Why would I want a patch harness for an aftermarket ECU...

I'm curious because I think I may have a OBD1 Miata AEM EMS and my car is a 97(IE. OBD2)
In honda land, there are millions of OBD2-->OBD1 conversions... could this patch harness be similiiar to this??


Landrew - You have too much time on your hands (but I just jacked your thread so I don't mind)
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Old 02-03-2010, 10:37 AM   #7
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- In the case you don't want to hack up your wiring harness in the car when running a parallel or piggy-back ecu. Also, if you have ever tried to do any sort of work on the ecu/harness underneath the driver side dash - the thought of one splice is depressing, much less 10+. For my 5' 8" frame, I had to lie with my back on the seat with only enough room in the footwell for my head and one arm. 2nd place to actual water-boarding. When the alternative is a pleasant splicing session on a workbench, sipping on the bevereage of choice - I'll take the $100 patch harness every time. FWIW, I got mine from Boomslang...
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Old 02-03-2010, 10:44 AM   #8
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Sorry, I have been here for a few months and have learned a bit. I've still got a lot to learn but when I saw the oppurtunity to make a joke to someone in my position a few months a go I thought I'd go for it.

Notice though that I kept it clean.

Thats me.
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Old 02-03-2010, 04:07 PM   #9
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squirrel - thanks! makes perfect sense now that think about it

Landrew - No offence taken!


Although now I'm on a search for a OBD2 to OBD1 conversion harness, or information on it.
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Old 02-07-2014, 09:09 AM   #10
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I know this is an old thread... but just wanted to inform you guys so you don't waste money like I did. The AEM Patch harness sold is incorrect for the NA. It is the 3 plug patch harness that may work for the NB (or any obd2 miata that uses the three plug ecu).

AEM ECU Patch/Extension Harness 30-2983C

That said... If you have an NA, go for the FFS, Begi, Boomslang, or the Autosport Wiring Harness.
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Old 02-07-2014, 09:14 AM   #11
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Quote:
Originally Posted by Meeners View Post
I know this is an old thread... but just wanted to inform you guys so you don't waste money like I did. The AEM Patch harness sold is incorrect for the NA. It is the 3 plug patch harness that may work for the NB (or any obd2 miata that uses the three plug ecu).

AEM ECU Patch/Extension Harness 30-2983C

That said... If you have an NA, go for the FFS, Begi, Boomslang, or the Autosport Wiring Harness.
Why wouldnt that work? The NA harness on the car side plugs into the two ends of the gray connector, and the two end white connectors plug into the ecu. That gray connector is the exact same on one my EMS4 harness.
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