[DMCForum] Re: Interesting problem with battery.

["snextime" <dmcvin6683@xxxxxxxxx>]

By attaching the positive first and negative second will eliminate most of =
the sparks at 
the battery.

Think of it this way...
when you put the neg on first you ground the whole car and then apply the p=
ositive 
you instantly turn everything on and then you get sparks.

Now on the other hand....
If you apply the positive on first, the system is not energized because no =
neg is 
connected so no sparks, apply the negative and you should have less sparks =
if any.

remember just because you connect the positive up first does not mean you g=
ive the 
system power because you need both cables connected for any power, you neve=
r will 
have half or any power with just the positive cable connected.

Now from what i am told i might be wrong but i remember the electrical curr=
ent flows 
from neg to pos not pos to neg so thats why you connect the pos side first =
then neg 
second.


Mark


--- In DMCForum@xxxxxxxxxxxxxxx, Samuel <samuel_yahoo@xxxx> wrote:
> then i must jump cars backwards I'll have to check that. i do know that 
> when hooking up a battery, putting positive on first will result in 
> applying current to the system so you are more likely to get a spark 
> upon trying to connect the negative (especially if something is crossed).=

> 
> Samuel
> 
> DMCVIN6683 wrote:
> 
> >I was taught to connect positive first the negative when jumping a car, =

> >it even says to do this in the owners manual.
> >
> >Mark
> >
> >
> >On Thursday, December 25, 2003, at 07:05 AM, Samuel wrote:
> >
> >  
> >
> >>It is likely to be due to the order you connected the terminals. By
> >>connecting the positive first, your giving power to the system. When 
> >>you
> >>tried to connect the negative, it caused the sparking. As a result, the=

> >>electronics could have screwed up. When you disconnected and 
> >>reconnected
> >>it the proper way (negative first, then positive), you arent providing
> >>power to the system until you have a complete circuit. It keeps it from=

> >>sparking, and keeps other things from screwing up due to having power
> >>but not a full circuit. This is also why you connect the negative first=

> >>then positive when your going to jump a car. Otherwise you would send
> >>surges thru the system when you connect the negative after the positive=

> >>due to the sparks.
> >>
> >>Of course I'm sure someone is going to post showing how this is somehow=

> >>wrong.
> >>
> >>Samuel
> >>
> >>Enid/Jeremiah wrote:
> >>
> >>    
> >>
> >>>Ok everyone.  Here is one that's not quite as crazy as my last couple =

> >>>      
> >>>
> >>of posts.
> >>    
> >>
> >>>Until I buy a battery kill switch, I have been taking the time to 
> >>>      
> >>>
> >>dettach the postitive lead to my battery every time I turn off my 
> >>DeLorean.  Well, last I used it was 2 days ago, and for Christmas as a =

> >>unique present I wanted to give my Mom a ride in it since she had 
> >>never ridden in a DeLorean yet.  Well, I went to hook the battery up - =

> >>first connecting the positive lead, then the negative.  Using a socket =

> >>wrench, I went to start turning the battery bolt on the negative side, =

> >>and sparks flew all over.  I don't mean one or two - I mean yellow, 
> >>orange, red sparks went flying everywhere.  To say the least, I was 
> >>spooked, but I went on and attached the cables securely.  Went to turn =

> >>the car on, *click* - no start.  You could hear the car turning over, 
> >>but no vroom vroom.  Went and tightened even more - *click* nothing.  
> >>Did this about 5 more times to no avail.
> >>    
> >>
> >>>To say the least, I was irritated and went back into the house in 
> >>>      
> >>>
> >>defeat.  My fiance as she konked out to sleep suggested I undo both 
> >>cables and try it again.  Of course, I didn't want to, and I 
> >>sarcastically told her that was futile.  However, I swallowed my pride =

> >>and volunteered to try one more time stating "I'm not expecting any 
> >>miracles".  Went out and decided for fun to switch the battery bolts.  =

> >>I connected the negative first, then the positive.  I noticed that the =

> >>bolt for the positive side seemed stripped, because I would get it 
> >>snug and secure, and then it would just keep turning.  I had no 
> >>trouble unwinding the bolt out, but it never seemed to stop turning 
> >>when I would try to tighten it.  Anyhoo, I turned it until I felt it 
> >>was nice and snug, and sat in the driver's seat saying to myself 
> >>sarcastically "Whatever..." and cranked the key. VVRROOOOOOM! - to 
> >>life my car came...To say the simplest, I let my ! lady know she was 
> >>right (something some of you might want to just get
> >>    
> >>
> >>>used to right now ;) )
> >>>
> >>>My question - what the heck happened?  Did I just not ever tighten it =

> >>>      
> >>>
> >>down right the last SEVEN attempts?  Did I just not get a good 
> >>connection?  Was my battery on its last leg?  Can someone give me a 
> >>tip to two to keep from establishing a channel so I don't see those 
> >>sparks again..?  Would the battery kill switch save me this 
> >>aggravation?
> >>    
> >>
> >>>I was very happy to see my car behave, but I don't want to go through =

> >>>      
> >>>
> >>that again.
> >>    
> >>
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> >  
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