Ahhhhh... Ok thanks.
So if I don't hook up disable... What is the downside?

 

<p>You can't control the alternator from megasquirt.</p><p>No turning it off at WOT, or on cranking.</p>

 

Which would burn up the battery.... Would it not?

Ok, stoopid MS Newb question.. Let's say I have a spare output.. Pretty sure I do. How do I make the MS control it?

 

Ok, well... I hooked the ground wire to one of the ground pins above the proto area. The +12v is hooked to one of the 3 12v pins on the edge connections of the MS, next to the INJ1 connections. The Field wire is connected to 1o.

However, no matter which way I adjust the pot.. I am not charging at all. Just a steady voltage drop.

Any thoughts?

 

<br />
<br /><br />
<br />What is the field voltage?

 

The voltage as tested at the battery started at 12.26 but continued to drop.

 

<p>But what is the field voltage.</p>

 

If I measure it from the big wire on the Alt. it is 12.32 right now. Is this what you are asking?

 

<p>Field is connected to 1o right? You need to adjust the pot until it is 0v.</p>

 

Ok. I will try that. Let me put my DMM on that wire and see what I can do.

Thank you

 

Ok, with my DMM on 1o and on a ground in the dash, I get 11.94. No amount of turning the Pot makes any difference in this reading.

 

<p>How much are you turning it. If its a 100k pot then its 22 turns total. So somewhere in the middle.</p><p>Do you have access to a variable power supply</p>

 

I do not have access to a variable power supply. I have probably turned it 15 full turns with absolutely zero change.
Looks like I may have to re-install the NA Alt. and do the wiring mods.

As a side note, I see a lot of mention of a battery light. I do not seem to have a battery light in my cluster. So I wonder if that has something to do with this.

 

Oops. Browser refreshed and posted twice.

 

<p>Turn it 25 turns clockwise and then 11 counterclockwise.</p><p>You should also measure the value of the pot. it should be like 50k.</p><p>Are you sure you don't have a battery light? I think all the NBs did.</p>

 

Ok, I will try that. I shone a flashlight at my cluster. I cannot see anywhere it would be. Also it does not come on when I turn the key initially.

 

<p><img src="https://cimg5.ibsrv.net/gimg/www.miataturbo.net-vbulletin/480x360/80-hqdefault_d58d4946536c23db95fb74d38a6b562e9a194815 .jpg" title="" /><br /><br />&nbsp;</p>

 

Ok. I have it so the field reads a pretty steady 0.036. But it still isn't charging. I have a second set of gauges. I installed them as well.. just in case something was busted with my custom one. Still not charging. So I guess that is not the issue.

Tomorrow I will put on my other NB Alternator... Just in case mine somehow got messed up. Although it SHOULDN'T be messed up. I am really not sure what else could possibly be keeping it from charging.

 

Also, that light does not come on, on either of my gauge sets when I turn the key. So I checked my spare set with the DMM. I have continuity across it. It just doesn't light up. Even when I switch it to a know working bulb.

 

<p>Thats because there isn't anything to turn it on. You wire the alternator board to it.</p>