MS3X Diode Wiring - Page 2 - 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 08-24-2015, 04:07 PM   #21
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Nov 2013
Posts: 49
Total Cats: 5
Default

I'm sorry if I missed it but I still can't find an answer to the 2nd question in my previous post. Namely, do pins 1, 9, and the pin for the A/C fan EACH have 2 wires connected to them? Or do each one of these pins ONLY connect to 12v?
wred is offline   Reply With Quote
Old 08-24-2015, 05:18 PM   #22
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

<p>
Quote:
Originally Posted by aidandj View Post
No. You never connected them both. He said to connect a diode between them. AC out is any output. I think I used nitrous 2? Or an injector output.
</p><p>As I said. You don't connect them to 12v. That makes no sense. Those are outputs.</p>
aidandj is offline   Reply With Quote
Old 08-24-2015, 06:03 PM   #23
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Nov 2013
Posts: 49
Total Cats: 5
Default

Got it. Thanks for your guys' patience.
wred is offline   Reply With Quote
Old 08-24-2015, 06:05 PM   #24
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

<p>
Quote:
Originally Posted by Braineack View Post
That's because Frank apparently didn't get the memo... dont install diodes--install the wire to 12v and forget all about diodes. Then just worry about running 40-odd wires inside a case with no room for 40-odd wires... how many times do i have to say it? YOU DO NOT NEED TO INSTALL DIODES. a ms3x unit needs (3-4) modifications in order to make it run any 90-05 miata. 1. The (2) VR input jumpers and pull-up using the 1K to r13 and r45. 2. Pull-up from s12c to JS9 3. Flyback modification wire to s12 for the expander. 4. *OPTIONAL* 1K Pull-up to 5v for NB alternator. that's it. Then it's all harness assembly. The only difference between any MS3x I build is step 4 depending if I'm building it for an NB or not.
</p><p>This is what you need to focus on. Frank's guide has a lot of semi-out dated info.</p><p>Thanks for bringing this up. Its going to save me a lot of time wiring diodes tonight.</p>
aidandj is offline   Reply With Quote
Old 08-25-2015, 05:14 PM   #25
Newb
 
Join Date: Mar 2011
Posts: 12
Total Cats: 0
Default

Quote:
Originally Posted by Braineack View Post
That's because Frank apparently didn't get the memo...

dont install diodes--install the wire to 12v and forget all about diodes.

Then just worry about running 40-odd wires inside a case with no room for 40-odd wires...



how many times do i have to say it? YOU DO NOT NEED TO INSTALL DIODES.

a ms3x unit needs (3-4) modifications in order to make it run any 90-05 miata.

1. The (2) VR input jumpers and pull-up using the 1K to r13 and r45.
2. Pull-up from s12c to JS9
3. Flyback modification wire to s12 for the expander.
4. *OPTIONAL* 1K Pull-up to 5v for NB alternator.

that's it. Then it's all harness assembly. The only difference between any MS3x I build is step 4 depending if I'm building it for an NB or not.
What are the details of #4? Built a MS3 per Westfields instructions. Just updated the MS3 to above #3 mod. Getting ready to put in a '00 NB. I have his alternator board as well. Just checking if I should do anything else differently from the original setup?
nismo240 is offline   Reply With Quote
Old 08-25-2015, 05:18 PM   #26
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

If you are using his alternator board no need for step 4. Just wire field on his board to spr4 amd then add spr4 to the harness like his diagram has.
aidandj is offline   Reply With Quote
Old 08-25-2015, 06:42 PM   #27
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

why the **** would you use his alternator board or build the circuit?

ms3x supports alternator regulation.
Braineack is offline   Reply With Quote
Old 08-25-2015, 06:45 PM   #28
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

<p>I'm using it because I'm building this megasquirt for someone who wants **** to be easy and doesn't want to mess around with it. I haven't played with alternator control so I'm not going to give it to him.</p><p>(Also the board was included in the kit he bought)</p><p>If it was me I would try the alternator control.</p><p>All these questions you ask are because Frank's guides are outdated, yet they are the only &quot;step by step&quot; guides to building a megasquirt.</p><p>MS3x seems easy to you, but when you don't know what anything is and you just buy from DIY autotune, franks **** is what everyone goes to.</p>
aidandj is offline   Reply With Quote
Old 08-25-2015, 07:32 PM   #29
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

<p>
Quote:
Originally Posted by aidandj View Post
</p><p>I'm using it because I'm building this megasquirt for someone who wants **** to be easy and doesn't want to mess around with it. I haven't played with alternator control so I'm not going to give it to him.</p><p>(Also the board was included in the kit he bought)</p><p>If it was me I would try the alternator control.</p><p>All these questions you ask are because Frank's guides are outdated, yet they are the only &quot;step by step&quot; guides to building a megasquirt.</p><p>MS3x seems easy to you, but when you don't know what anything is and you just buy from DIY autotune, franks **** is what everyone goes to.</p><p>
Uhm, for realz?&nbsp; Did you open up the 200+ page MS3X V3.0 manual?&nbsp; And yes, I would use the on board alternator control.&nbsp;</p>
Ben is offline   Reply With Quote
Old 08-25-2015, 07:35 PM   #30
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

<p>I did. I used it. I built my megasquirt.</p><p>I'm telling you why people use franks guides. It is the &quot;Miata Megasquirt building for dummies book&quot;.</p><p>Once you actually do some more reading and research then it becomes obvious, but a lot of people don't get that far. I know when I built my first megasquirt I didn't know what half the **** was, I just followed the steps. I've since learned a lot more.</p><p>Just explaining it from a noobs point of view.</p>
aidandj is offline   Reply With Quote
Old 08-25-2015, 07:38 PM   #31
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

<p>
Quote:
Originally Posted by aidandj View Post
</p><p>I did. I used it. I built my megasquirt.</p><p>I'm telling you why people use franks guides. It is the &quot;Miata Megasquirt building for dummies book&quot;.</p><p>Once you actually do some more reading and research then it becomes obvious, but a lot of people don't get that far. I know when I built my first megasquirt I didn't know what half the **** was, I just followed the steps. I've since learned a lot more.</p><p>Just explaining it from a noobs point of view.</p><p>
What I don't understand is why people follow 3rd party--and often old, wrong, and outdated--build guides instead of following the published manuals.&nbsp; We were begged to produce comprehensive .pdf manuals.&nbsp; It was a big endeavor.&nbsp; We did it.&nbsp; And no one reads them.</p>
Ben is offline   Reply With Quote
Old 08-25-2015, 07:41 PM   #32
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

<p>I read them, if that makes you feel any better </p><p>Because people want it easy. A lot of people build their own to save money, they don't want to learn they are just cheap. I started out that way, then realized I actually wanted to understand stuff.</p><p>Also, you gotta realize this **** is confusing. I have a degree in electrical engineering, with a lot of focus on embedded programming and devices, and I struggled at the beginning (some would say I still do)&nbsp;its just a different level of stuff.</p><p>Pretend you didn't know what a resistor does and follow the guides, its not easy.</p>
aidandj is offline   Reply With Quote
Old 08-25-2015, 07:46 PM   #33
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

<p>I mean look at OP Ben, he doesn't know how a fan output works. (No offense to OP). He had the diode wired in a way that renders the output completely useless. And potentially sends 12v where it might not want to be.</p><p>You work on megasquirt for a living, some people have art degrees&nbsp;<img alt="The Brain" src="https://www.miataturbo.net/images/smilies/the_brain.gif" style="height:32px; width:32px" title="The Brain" />. I tried to help a kid install his megasquirt the other day, and quit, because he just didn't care about understanding how it worked. Started freaking out when it wouldn't idle right. And this was an MS3 basic, I had to talk him out of building his own.</p>
aidandj is offline   Reply With Quote
Old 08-26-2015, 11:28 AM   #34
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

I helped frank with his guide, but like ben said, part of the problem was keeping up.

I publish all my information, but it's hard to stay up-to-date. that why i didnt bother writing my own.

Then the next problem is, people start referencing old docs as bible. and you have people doing old out-dated methods of things. like building the Abe's VR conditioner circuit, or people pulling the SIG_START fuse when unnecessary, or adding in random diodes, lots of references to MS1 stuff.

frank's guide is pretty good for little hints and time-savers, but it's pretty outdated on a few accords at this point, and I still dont like the integrated harness thing.




basically, what it all boils down to is that im lazy.
Braineack is offline   Reply With Quote
Old 08-26-2015, 11:32 AM   #35
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

Im not blaming anyone. Just explaining why.
<br />I hate the integrated harness. And I built line like that. Someday I will redo it.
aidandj is offline   Reply With Quote
Old 08-26-2015, 11:35 AM   #36
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

dont lie. let's fight.
Braineack is offline   Reply With Quote
Old 08-26-2015, 11:38 AM   #37
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,999
Total Cats: 1,466
Default

Don't even joke, I would kick your ***.
aidandj 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 07:43 PM.