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Author Topic: Alternator Regulator Wiring Diagrams (all three)  (Read 14936 times)

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Stu Jackson

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Alternator Regulator Wiring Diagrams (all three)
« on: September 14, 2008, 06:20:45 PM »

Alternator Regulator Wiring Diagrams

The only PURPOSE I originally had posting these diagrams was to show you how I used "record keeping" and these sketches to help me keep track and for identifying the wiring between a new regulator and alternator with the old wiring included.  It is one of many "wiring diagrams" I have developed for our boat.

{4/15/2012}  Battery sense wire since removed from alternator and run directly to the house bank: VERY important.  Note this also doesn't show the battery sense negative, as recommended by MS in his links below.

Once I ran the AO to the house bank, I removed the zap stop. - Stu


In a later 2018 post about external regulation, Maine Sail made this point:

If you are using an external regulator those diagrams will not result in the performance you've paid for.. Correctly wiring the volt sensing circuit is critical to charging performance...
Here are a couple of articles that can help:
Alternators & Voltage Sensing (LINK)
Programming a Balmar Regulator (LINK)


Point being that the negative sense has to be wired, too.  RTFM  :D

I never intended for these diagrams to be misinterpreted by anyone as a "How to Wire" YOUR regulator on YOUR boat.  That's up to you.  I wanted to show you how easy a wiring diagram can be to draw to keep track and record your work.  For example, the added battery sense wire note?  The regulator manual is very poor on differentiating between separate to the house bank or just off the back of the alternator.  Reading Maine Sail on, way before he wrote these two articles, taught me that performance would be improved by doing so.  So I did.  :D

CLICK on each diagram for a clearer version
« Last Edit: November 28, 2018, 11:54:32 AM by Stu Jackson »
Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

"There is no problem so great that it can't be solved."

Barry White

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Re: Alternator Regulator Wiring Diagrams
« Reply #1 on: May 13, 2009, 07:11:10 PM »

Hi again Stu,
I spent some time this afternoon taking the cockpit panel off to further verify the "installed" version on our boat, and found that the wires to the ammeter are not in the #6 to 4 size, the orange is approx. a # 8, so there are a multiple of variations out there... the additional diagrams will be helpful..., thanks,

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