Thanks Aidan, I agree with you. For reference, I've been watching this video: ; reading this thread: https://www.miataturbo.net/diy-turbo...-thread-82744/ ; and this thread: https://www.miataturbo.net/adaptroni...1/#post1005789

Are there any other or better references that I could use that you may be aware of?

:flame suit on:

Hey ya'll just wanted to offer an update. The NAPA ECHLIN IC413 coils are made in Poland. But that doesn't matter because my misfire issues where from hamfisting my plug wires. They are tender at the 90° and where breaking/broken apart.

Escalade wires work well in a bind, haven't had a misfire issue since.

My next issue is possibly fuel and airflow related. But i'll take that offline in another thread.


Moral of the story:
Check your wires
And still, just get GM Take off's or OEM Delphi over other.

Buy these ends from Summit and be done with your troubles. I used them on stock Miata wires to go to my truck coils.

https://www.miataturbo.net/attachmen...ine=1417095884

I use the stock wires but used the Taylor ends from Summit Racing on the coil side and shortened the high tension leads to match my needs.

https://www.miataturbo.net/attachmen...ine=1417133330


https://www.summitracing.com/parts/tay-46069

45s don't look as good with our style of bracket.

So get 90's?

That's what we had. But the 90* ends that magnecore suggested broke for both payam and I. You need to have a gentle touch with them. Which is why we are working on replacements.

Quick question in regards to wiring.

OEM has a 12v and ground going to each coil. Do I wire both 12v (black/white) wires to the pink wire and both ground (black) wires to the brown wire. Or is only one 12v and ground source sufficient for all coils.

Are you sure the power wires are thick enough???
 

Are the "Black/white" factory power wires a large enough gauge to supply current for the D585 truck coils? It seems awfully small for the whack these coils are supposed to give out. I just can't imagine a GM truck having wire that small driving 4 of its coils in its factory loom. Has anyone ever wondered about this?

exactly what i was looking for

:likecat:

Hey folks, I'm building a harness for my D585 coils and I wanted to pickup some capacitors. Last time I built a harness I picked up parts from my local RadioShack but as we know they're not really around anymore. Anyone have a suggested vendor for stuff like that?

I though most people were omitting the capacitors these days?

I tend to buy electronic components online these days from Element14 or RS Components but due to S&H costs prefer to wait until I've got a few things I need - paying more for S&H than the goods themselves just doesn't seem right. I usually end up ordering 10x what I actually need too (eg, rather than 1 trim-pot, I get 10 since they're cheap enough)

Yeah, hard to not buy in bulk for components like those with the cost of the shipping. If that's the case I will run without the caps, I know it was suggested pretty heavily when I built my COP harness but they're kind of in the way so not adding them in works for me.

amazon, ebay, digikey, or mouser depending on where the deal is after shipping. Generally buying 1 thing amazon or ebay are cheaper.

We didn't add capacitors into the FlowForce PNP harness. It's not needed.

D585 coils 1995 miata and ms3pro pnp
 

Here is a diagram I made for my wiring harness. May help someone. I will make my own build thread before too long. but for now. This is for D585 coils using GM pigtails from junkyard pull, 1994-1995 MX5 MS3Pro pnp

Is anyone running MSD replacements for de LS coils? Like the MSD streetfire ones. I need nee coils for my turbo build. About 300-350hp. Those are easier to get over here in the netherlands then OEM ones i think

Turned out my LS coils i have now are fake.

.

Never mind

Ok, oldish thread but figures it's best to keep all this stuff together rather than have 500 threads clogging up the forum.


Usual thing, will be needing coils soon, etc, etc.

Having read the thread front to back it's pretty clear that most people are using secondhand GM coils, which makes sense if they're readily available.

But have people had much experience with non-GM ones from reputable companies? (specifically NGK U5132)

I mean, I'd assume that the NGK ones would at least meet OEM specs (since they're an OEM supplier, granted not for GM), but yeah, assuming is one thing, experience is another altogether.


I'd happily just grab used GM ones, but it's damn hard to find them here since they were only really fitted to the VE SS Commodore and higher models. None of which ever really end up in the wrecking yards here (plenty of the V6 pov-packs, but very few V8)

Cheers.