Go Back   TeamTalk > General MasterCraft Topics > General Discussion

Reply
 
Thread Tools Display Modes
  #1  
Old 04-26-2017, 05:36 PM
Mattymillz12 Mattymillz12 is offline
TT Enthusiast
 
Join Date: May 2016
Boat: 2005 Mastercraft XStar
Location: Northeast
Posts: 104
Low voltage warning help!!!!

Hey guys, I know this topic is beat to death but I really need some help. Last year my 06 x star threw a bunch of low voltage warnings. We replaced the alternator and problem solved. However water was left on the alternator and most likely ruined it (don't know yet because I can't start it until later this week). Nonetheless it threw the low voltage warning again. So I'm going to replace that for safe measure. However, what else could be the culprit if not the alternator? Regulator? Bad ground? Both batteries read 14.6v until overnight, and today the starting battery simply read 8.0v. I'm kind of lost there as to what can do that? Connections look solid.

And does anyone have a wiring diagram with their perko switches to a dual battery setup just to check? Not ready to do the switch to ACR yet. I'm kinda concerned about this floating orange wire as well?!? Anyone have any info on that?? Help is appreciated!!!

-Matt
Attached Images
   
Reply With Quote
  #2  
Old 04-26-2017, 05:42 PM
RandyFL73 RandyFL73 is offline
TT Newbie
 
Join Date: Oct 2016
Boat: 1998 Mastercraft Maristar 200VRS
Location: Southeast
Posts: 21
Have you tested the batteries? Sounds as if they aren't holding a charge.
Reply With Quote
  #3  
Old 04-26-2017, 08:42 PM
Table Rocker's Avatar
Table Rocker Table Rocker is offline
MC Devotee
 
Join Date: Oct 2010
Boat: '96 ProStar 205, Sammy Duvall, LT-1
Location: Fayetteville, Arkansas
Posts: 2,207
Quote:
Originally Posted by Mattymillz12 View Post
I'm kinda concerned about this floating orange wire as well?!? Anyone have any info on that?? Help is appreciated!!!

-Matt
What do you have on the charging post on your alternator? Orange is typically the color of the charging lead from the alternator. At least it is on older boats like mine.
__________________
'96 ProStar 205 SD LT-1
Reply With Quote
  #4  
Old 04-27-2017, 05:08 AM
Mattymillz12 Mattymillz12 is offline
TT Enthusiast
 
Join Date: May 2016
Boat: 2005 Mastercraft XStar
Location: Northeast
Posts: 104
Quote:
Originally Posted by RandyFL73 View Post
Have you tested the batteries? Sounds as if they aren't holding a charge.
Yes I had them both tested. Although the starting battery was minimal, it still was not diagnosed as "bad" so they wouldn't replace. However, overnight the battery continued to drain significantly
Reply With Quote
  #5  
Old 04-27-2017, 05:11 AM
Mattymillz12 Mattymillz12 is offline
TT Enthusiast
 
Join Date: May 2016
Boat: 2005 Mastercraft XStar
Location: Northeast
Posts: 104
Quote:
Originally Posted by Table Rocker View Post
What do you have on the charging post on your alternator? Orange is typically the color of the charging lead from the alternator. At least it is on older boats like mine.
It's disconnected in the picture, but it's the thicker gauge red wire beside of the charging post. Then the thick black gauge for the negative post and the wiring harness that plugs in on top.

The orange wire had been previously disconnected but I'm curious as to why, or the exact wiring scheme.
Reply With Quote
  #6  
Old 04-27-2017, 06:30 AM
jgraham37128 jgraham37128 is online now
MC Devotee
 
Join Date: Oct 2012
Boat: 2016 Mastercraft X23
Location: Center-Hill Lake
Posts: 2,380
I would check/change the batteries without making any other changes.

Last edited by jgraham37128; 04-27-2017 at 08:02 AM.
Reply With Quote
  #7  
Old 04-27-2017, 07:35 AM
Table Rocker's Avatar
Table Rocker Table Rocker is offline
MC Devotee
 
Join Date: Oct 2010
Boat: '96 ProStar 205, Sammy Duvall, LT-1
Location: Fayetteville, Arkansas
Posts: 2,207
Quote:
Originally Posted by Mattymillz12 View Post
It's disconnected in the picture, but it's the thicker gauge red wire beside of the charging post. Then the thick black gauge for the negative post and the wiring harness that plugs in on top.

The orange wire had been previously disconnected but I'm curious as to why, or the exact wiring scheme.
The orange wire was probably decapitated and the red wire was added during the dual battery installation.
__________________
'96 ProStar 205 SD LT-1
Reply With Quote
  #8  
Old 04-27-2017, 08:56 AM
Wakerider16 Wakerider16 is offline
MC Devotee
 
Join Date: Jun 2013
Boat: 2001 Prostar 205V
Location: South Shore Boston
Posts: 1,281
Check the wiring as well from the alternator to the batteries. Had low voltage and it was because one of the wires got cut from something (no idea how) but as soon as I replaced problem was gone!
Reply With Quote
  #9  
Old 04-27-2017, 09:14 AM
DestinX-35's Avatar
DestinX-35 DestinX-35 is offline
TT Enthusiast
 
Join Date: Sep 2014
Boat: 2008 Mastercraft X-35 LY6
Location: Southeast
Posts: 141
Not sure if this helps, but i had an almost similiar situation as you. Troubleshot for a whole season with different (new) batteries, then new blue seas battery switch setup and still kept getting the alarm. Had "stock" alternator rebuilt and was still happening. Upgraded to the 95a alternator and all my problems disappeared. I now have 3 batteries in the boat with the 95a alternator and life is good.

Best of luck
Reply With Quote
  #10  
Old 04-27-2017, 05:17 PM
Mattymillz12 Mattymillz12 is offline
TT Enthusiast
 
Join Date: May 2016
Boat: 2005 Mastercraft XStar
Location: Northeast
Posts: 104
Quote:
Originally Posted by jgraham37128 View Post
I would check/change the batteries without making any other changes.
Since the starting battery was having issues with holding charge I just swapped that out. Rained on me today but I'm gonna hook up he new alternator in the morning and check it! Thank you!
Reply With Quote
Reply

Tags
alarm, alternator, battery, voltage

Thread Tools
Display Modes

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


All times are GMT -4. The time now is 07:04 AM.