Notices

Battery sparks when connenting

Thread Tools
 
Search this Thread
 
Old May 23, 2010 | 05:45 PM
  #1  
1965tontruck's Avatar
1965tontruck
Thread Starter
|
New User
Joined: Jul 2006
Posts: 15
Likes: 0
Battery sparks when connenting

I have a 1965 F350 (240 Ci engine 4-speed with granny gear). I was hooking up my battery after a long term storage anhd had sparks when conneting the cables (negative to ground first and then positive to starter relay). I started to disconnect the wires at the starter relay and found the wire that goes to the battery terminal on the alternator was shorted. I fixed that problem and then tried to hook up the battery again. This time I heard a pop and the alternator started to smoke. Guess I am going to replace the alternator, but do not know what really happened. Was it just time for the alternator to go or is there something else I should be looking for? There were no sparks at the starter relay with all wires connected except the alternatir wire, so I am relatively confidant that the problem is with the alternator and associated wiring.

Thanks for the help/
 
Reply
Old May 23, 2010 | 07:22 PM
  #2  
master_mechanic's Avatar
master_mechanic
Senior User
Joined: Feb 2007
Posts: 208
Likes: 1
i would safely say that the alternator shorted out. replace it and see what happens
 
Reply
Old May 23, 2010 | 08:24 PM
  #3  
BillC's Avatar
BillC
Elder User
Joined: Jul 2003
Posts: 531
Likes: 0
From: North Richland Hills, TX
Club FTE Silver Member

Once you get everything fixed, you should connect positive first then negative.
 
Reply
Old May 23, 2010 | 08:26 PM
  #4  
master_mechanic's Avatar
master_mechanic
Senior User
Joined: Feb 2007
Posts: 208
Likes: 1
it really doesn't matter what order you connect them in.
 
Reply
Old May 23, 2010 | 08:27 PM
  #5  
Franklin2's Avatar
Franklin2
Moderator
25 Year Member
Photogenic
Community Builder
Community Influencer
Joined: Jan 2001
Posts: 56,984
Likes: 2,738
From: Virginia
Club FTE Gold Member
Make sure you have the alternator wires and the regulator wires in the correct places also.
 
Reply
Old May 24, 2010 | 05:03 AM
  #6  
1965tontruck's Avatar
1965tontruck
Thread Starter
|
New User
Joined: Jul 2006
Posts: 15
Likes: 0
Thanks all for the responses.

Franklin2 - where are the correct places for the alternator and regulator wires.

Thanks
Tim
 
Reply
Old May 24, 2010 | 08:55 AM
  #7  
JimsRebel's Avatar
JimsRebel
Cargo Master
15 Year Member
Photogenic
Photoriffic
Community Builder
Joined: Mar 2008
Posts: 2,569
Likes: 207
From: Washington
Originally Posted by master_mechanic
it really doesn't matter what order you connect them in.
If the last connection is a negative connection, then ... when the wrench hits the metal frame... nothing bad happens.

Same goes for remove, break a negative connection first, it's the safe way to do it.

Jim
 
Reply
Old May 24, 2010 | 11:46 AM
  #8  
rotun's Avatar
rotun
Reads ***** rules!
Joined: Nov 2007
Posts: 1,105
Likes: 3
From: So.Ca./ N.E. UT
Club FTE Silver Member

Originally Posted by JimsRebel
If the last connection is a negative connection, then ... when the wrench hits the metal frame... nothing bad happens.

Same goes for remove, break a negative connection first, it's the safe way to do it.

Jim

+1.......there's alot of grounded parts for that wrench to touch!
 
Reply
Old May 24, 2010 | 07:04 PM
  #9  
master_mechanic's Avatar
master_mechanic
Senior User
Joined: Feb 2007
Posts: 208
Likes: 1
I know that's how your supposed to do it but if your carefull nothing will happen. Basically what I'm saying is that if you hook the positive up last it won't affect the operation of anything
 
Reply
Old May 24, 2010 | 08:19 PM
  #10  
Franklin2's Avatar
Franklin2
Moderator
25 Year Member
Photogenic
Community Builder
Community Influencer
Joined: Jan 2001
Posts: 56,984
Likes: 2,738
From: Virginia
Club FTE Gold Member
Originally Posted by 1965tontruck
Thanks all for the responses.

Franklin2 - where are the correct places for the alternator and regulator wires.

Thanks
Tim
There are two ways Ford wired their older type alternators. I am going to assume yours will be wired this way. If it has a wire on the "i" terminal of the regulator, then this diagram should be correct. If it doesn't have a wire on the "i" terminal of the regulator, there is another diagram that applies.

 
Reply
Old May 25, 2010 | 05:24 AM
  #11  
1965tontruck's Avatar
1965tontruck
Thread Starter
|
New User
Joined: Jul 2006
Posts: 15
Likes: 0
Thanks Franklin2! I compared the wiring and that is how mine is connected. I will replace the alternator and regulator and see what happens when I connect up everything.

I appratiate the help.

Tim
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
kaden78ford390
1973 - 1979 F-100 & Larger F-Series Trucks
4
Nov 27, 2015 01:47 PM
Andy_W
6.4L Power Stroke Diesel
6
Nov 17, 2014 08:58 PM
Factola72
1987 - 1996 F150 & Larger F-Series Trucks
24
Apr 7, 2014 06:23 PM
65fastback302
1987 - 1996 F150 & Larger F-Series Trucks
1
Apr 2, 2009 11:53 PM
FordGirlie
Explorer, Sport Trac, Mountaineer & Aviator
2
Mar 9, 2006 08:39 PM




All times are GMT -5. The time now is 03:38 PM.