MSPNP MSPNP specific Megasquirt related discussion.

NB alternator on NA w/ MS3Pro

Thread Tools
 
Search this Thread
 
Old 05-22-2024, 02:04 PM
  #1  
Junior Member
Thread Starter
iTrader: (1)
 
JakZe's Avatar
 
Join Date: Nov 2020
Location: Hawaii - Kauai
Posts: 125
Total Cats: 8
Default NB alternator on NA w/ MS3Pro

I can't seem to find a concrete answers to this, but long story short, I have a race coming up this weekend and I live on an island where no auto parts store has an alternator is stock, and most likely would not arrive on time anyways. I do however have a few used NB alternators on hand that I'm considering to use. I know the NA ones have a built in regulator and the NB's are controlled via ECU, and I also know the MS3pro allows you to regulate the voltage as well.

My question is, is it a matter of just swapping the NB alternator in and changing a few settings in tunerstudio? Or will I have to splice a few wires to correct the outputs? As a temporary solution I'd rather not splice anything and just miss the race, but if I can just hot swap and change a few settings, I can make my race.
JakZe is offline  
Old 05-22-2024, 11:46 PM
  #2  
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,285
Total Cats: 1,163
Default

On NAs, the small white/green wire is fused power, the white/black wire is the ground light for the charge light to turn it on/off when batt V is below/above 12 volts or whatever the regulator's set to.

On NB2s, the grey wire goes to 4t, the grey/red wire goes to 3M. According to Link's wiring pinout, the grey/red wire is your alt control wire, looks like they don't utilize 4T, they just call it "alt voltage".

So wire the grey/red to an output on your MS that you can select in the "control output" drop down menu of the alt control page. Download a NB2 basemap to get the rest of the settings.
curly is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rwyatt365
General Miata Chat
6
10-21-2015 02:19 PM
disney7
ECUs and Tuning
7
08-08-2015 07:41 PM
Marc D
General Miata Chat
1
05-17-2010 09:22 PM
flier129
General Miata Chat
6
04-12-2010 10:36 PM
Zaphod
DIY Turbo Discussion
15
12-11-2009 08:52 AM



Quick Reply: NB alternator on NA w/ MS3Pro



All times are GMT -4. The time now is 05:43 PM.