Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 31-03-2017, 09:18   #1
Registered User

Join Date: Apr 2008
Location: Fort Myers Beach, FL
Boat: Beneteau 393
Posts: 8
Balmar Alternator and MC 612 regulator issue

No charge coming to batteries. Noticed lights on reaulator MC 612 not working. Followed diagnostics in manuel: Replaced 10 amp and 1 amp fuses between alt and reg. Tested positive red on Ford plug on reg and it reads good. However the brown (ignition) nd blue (sense wire) gave no reading and it should. I replaced regulator and get same symptoms. Perplexed!
I am getting charge out of alternator.

Any thought appreciated!
__________________

iwindance is offline   Reply With Quote
Old 31-03-2017, 09:25   #2
Registered User
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 8,461
Re: Balmar Alternator and MC 612 regulator issue

Yes, find out why you don't get the voltages that you "Should" be getting.
__________________

DeepFrz is offline   Reply With Quote
Old 31-03-2017, 09:37   #3
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29 49.16 N 82 25.82 W
Boat: Pearson 422
Posts: 14,618
Re: Balmar Alternator and MC 612 regulator issue

How do you know you are getting charge from the alternator?
__________________
The water is always bluer on the other side of the ocean.
Sometimes it's necessary to state the obvious for the benefit of the oblivious.
Rust is the poor man's Loctite.
skipmac is online now   Reply With Quote
Old 31-03-2017, 09:40   #4
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29 49.16 N 82 25.82 W
Boat: Pearson 422
Posts: 14,618
Re: Balmar Alternator and MC 612 regulator issue

If you aren't getting voltage on the sense wires then trace them back the other way from the regulator. The sense voltage comes to the regulator not from the regulator so you possibly replaced a good regulator.

Very likely a loose or corroded connection OR bad ignition switch. Like Deepfrz said, find out why you aren't getting voltage to the sense wires.
__________________
The water is always bluer on the other side of the ocean.
Sometimes it's necessary to state the obvious for the benefit of the oblivious.
Rust is the poor man's Loctite.
skipmac is online now   Reply With Quote
Old 31-03-2017, 09:48   #5
cruiser

Join Date: Jul 2007
Location: currently in Bahamas
Boat: Hunter 410
Posts: 16,293
Re: Balmar Alternator and MC 612 regulator issue

You replaced regulator before you found why there isn't voltage on the wires there should be??????????

Was the ignitor key on when you tested it?
sailorboy1 is offline   Reply With Quote
Old 31-03-2017, 10:14   #6
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 8,039
Re: Balmar Alternator and MC 612 regulator issue

When I put my MC-612 in years ago, it failed a number of times. Why? Because every single one of the factory installed ring terminals and heat shrink on the wiring harness failed. Since I replaced them, everything works just fine.

You need to trace and check every single wire. 99% of electrical failures are the connections, usually not the wires themselves.

Good luck.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Old 31-03-2017, 10:50   #7
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29 49.16 N 82 25.82 W
Boat: Pearson 422
Posts: 14,618
Re: Balmar Alternator and MC 612 regulator issue

Quote:
Originally Posted by Stu Jackson View Post
When I put my MC-612 in years ago, it failed a number of times. Why? Because every single one of the factory installed ring terminals and heat shrink on the wiring harness failed. Since I replaced them, everything works just fine.
This is very good to know. I have one of these and so far so good but if it dies I will start with checking the factory crimps.

Quote:
Originally Posted by Stu Jackson View Post
99% of electrical failures are the connections, usually not the wires themselves.
Correct. Unless the wire gets crimped between something or chaffed on moving/vibrating equipment I would say 99.99% of the failures are in the connections.
__________________
The water is always bluer on the other side of the ocean.
Sometimes it's necessary to state the obvious for the benefit of the oblivious.
Rust is the poor man's Loctite.
skipmac is online now   Reply With Quote
Old 31-03-2017, 10:52   #8
Registered User
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 8,461
Re: Balmar Alternator and MC 612 regulator issue

I added a note to my above post but I guess I forgot to hit enter. Senior's moment. Anyway the Blue wire is not the sense wire. It is the field wire.
DeepFrz is offline   Reply With Quote
Old 01-04-2017, 10:36   #9
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jan 2017
Posts: 694
Re: Balmar Alternator and MC 612 regulator issue

I had a nightmare until I had the alternator tested. The technician remarked that my alternator was shielded ground. I knew immediately what was going on and installed a ground to the alternator. That fixed everything.
Check to see if your alternator needs a separate ground wire.
KP44 is offline   Reply With Quote
Old 01-04-2017, 11:27   #10
Registered User

Join Date: Feb 2015
Location: Somewhere warm
Boat: Morgan 462
Posts: 1,074
Re: Balmar Alternator and MC 612 regulator issue

Quote:
Originally Posted by iwindance View Post
No charge coming to batteries. Noticed lights on reaulator MC 612 not working. Followed diagnostics in manuel: Replaced 10 amp and 1 amp fuses between alt and reg. Tested positive red on Ford plug on reg and it reads good. However the brown (ignition) nd blue (sense wire) gave no reading and it should. I replaced regulator and get same symptoms. Perplexed!
I am getting charge out of alternator.

Any thought appreciated!
A few things unclear in your post. *All* lights on regulator not working? You replaced regulator and get same symptoms? Like there were *no* lights showing on the new regulator? If so you probably not getting the 12V supply to it from the ignition circuit, as was mentioned it could be the keyswitch or several other causes. Remove plug from MC-612 and check 12V from ignition is being supplied to the regulator.
waterman46 is offline   Reply With Quote
Old 01-04-2017, 12:57   #11
Registered User

Join Date: Jun 2009
Location: Annapolis, MD
Boat: Gozzard, 44CC, 50'
Posts: 283
Re: Balmar Alternator and MC 612 regulator issue

Had similar problems. Discovered the sense / field wires were plugged in backwards. Rotated and re-plugged. Works great now!
Scrimshaw4 is offline   Reply With Quote
Old 01-04-2017, 16:46   #12
Registered User

Join Date: Aug 2015
Posts: 461
Re: Balmar Alternator and MC 612 regulator issue

A Balmar mc-612 requires +12v on three terminals before it will turn on.
Red = 12vdc supply
Brown = 12v ignition switch
Sense (separate terminal) = 12v direct from battery.

The blue wire is the field output to the alternator, and will only have voltage once the regulator is energized and operating.
__________________

boatbod is offline   Reply With Quote
Reply

Tags
alternator, balmar, regulator

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Balmar 614 regulator / Balmar Alternator help Strait Shooter Electrical: Batteries, Generators & Solar 16 25-08-2015 13:08
Want To Buy: Balmar 70-110 alternator and regulator unbusted67 Classifieds Archive 0 17-08-2014 20:47
Balmar 612 field threshold does not seem to be adjustable. New Song Electrical: Batteries, Generators & Solar 11 21-07-2014 16:34
For Sale: Balmar Max Charge Marine Regulator MC-612-H JimJohnston Classifieds Archive 0 07-07-2012 14:53
Stock Universal M25 Alternator with Balmar External Regulator ? sgtPluck Electrical: Batteries, Generators & Solar 2 31-03-2010 09:04

Advertise Here


All times are GMT -7. The time now is 13:45.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.