Yesterday's Tractor Co. Parts for Farm Tractors - Compare our Prices!
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

I want to change from a 12v positive ground to a 12v negativ


 
Post new topic    
View previous topic :: View next topic  
Author Message
Shane T
Guest






Report to Moderator

PostPosted: Fri Nov 23, 2012 9:18 am    Post subject: I want to change from a 12v positive ground to a 12v negativ Reply to specific post Reply with quote

I have a Allis Chalmers D15 series II with a 12v positive ground electrical system. What all do I have to do to change it to a negative ground electrical system? I have been told to swap the battery cables on the battery and to swap the two wires on the coil. Is that all I have to do?
 
Back to top
Bob Bancroft
Tractor Guru


Joined: 05 Mar 2009
Posts: 4116
Location: Aurora NY

Report to Moderator

PostPosted: Fri Nov 23, 2012 9:28 am    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

You will also have to swap the wires on the ammeter, unless you want to read it backwards!
 
Back to top
View user's profile
old
Tractor Guru


Joined: 12 Mar 2000
Posts: 57418
Location: Lake of the Ozarks area of MO

Report to Moderator

PostPosted: Fri Nov 23, 2012 9:29 am    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

First off why the heck do you want to change it??? There is no rime or reason to do so if it is working. Now if you just have to do so which as I said no rime or reason to do so you need to first figure out if you have a generator or an alternator. If you have a generator yes you switch the battery cables and the coil wires and then you polarize the generator system and your good to go. But again I will ask WHY?????????????????????????????
 
Back to top
View user's profile
David G
Tractor Guru


Joined: 11 Jan 2008
Posts: 10292


Report to Moderator

PostPosted: Fri Nov 23, 2012 1:33 pm    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

You will need to repolarize generator before it will charge.
 
Back to top
View user's profile
TractormanNC
Long Time User


Joined: 29 Dec 2006
Posts: 1119


Report to Moderator

PostPosted: Fri Nov 23, 2012 2:32 pm    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

He may be wanting to use some electronic equipment on or with the tractor and has to have negative ground for it to work.
 
Back to top
View user's profile
Shane T
Guest






Report to Moderator

PostPosted: Fri Nov 23, 2012 5:58 pm    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

Thanks for your help guys. Have a great day.
 
Back to top
Scoyt
New User


Joined: 03 Jul 2009
Posts: 19


Report to Moderator

PostPosted: Sat Nov 24, 2012 11:02 am    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

If the positive and negative are swapped, wouldn"t the starter turn backwards?
The reason I ask is because I also have a D15 Series II, and considering the same swap.
 
Back to top
View user's profile
Bob Bancroft
Tractor Guru


Joined: 05 Mar 2009
Posts: 4116
Location: Aurora NY

Report to Moderator

PostPosted: Sat Nov 24, 2012 3:52 pm    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

No. I also have a D15II and I have switched it. I can't remember if I had to polarize it or not.
 
Back to top
View user's profile
Scoyt
New User


Joined: 03 Jul 2009
Posts: 19


Report to Moderator

PostPosted: Sat Nov 24, 2012 6:30 pm    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

Ok, I just thought it may run backwards. Thanks.
 
Back to top
View user's profile
Bill MO.
New User


Joined: 22 Aug 2012
Posts: 11


Report to Moderator

PostPosted: Thu Nov 29, 2012 5:35 pm    Post subject: Re: I want to change from a 12v positive ground to a 12v neg Reply to specific post Reply with quote

The starter doesn't care what the polarity is.
Bill B
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Allis Chalmers All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651.

YT Home  |  Forums Home

Copyright © 1997-2014 Yesterday's Tractor Co.

Powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters