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Also you mention that with the battery disconnected WITH the engine running=
, the alternator (or generator) will supply the power to keep everything ru=
nning!
That is why racing organizations require that the disconnect switch actuall=
y will kill the engine (wired wrong, the battery will be disconnected but t=
he engine will still run=E2=80=A6 a real safety hazard in a racing accident=
!)
Paul
From: Spridgets [mailto:spridgets-bounces@autox.team.net] On Behalf Of John=
Innis via Spridgets
Sent: Wednesday, January 13, 2016 11:52 AM
To: MICHAEL ROWE
Cc: Spridgets
Subject: Re: [Spridgets] Battery disconnect
It really doesn't make a lot of difference which one is disconnected, eithe=
r will prevent any danger of a short. But there is a good reason to do the=
negative, or at least do it first. The reason is that if your wrench acci=
dentally hits a part of the body or frame while removing the negative termi=
nal, it is not a problem because they are normally connected to the negativ=
e terminal anyway. But, if your wrench slips while undoing the positive te=
rminal and hits the body or frame, you are arc welding. Once the negative =
is disconnected, there is no path for current back to the battery, so the r=
isk is eliminated.
On Wed, Jan 13, 2016 at 11:44 AM, MICHAEL ROWE via Spridgets <spridgets@aut=
ox.team.net> wrote:
Instructions for working on the gauges of my Toyota say remove the negative=
battery terminal. This makes no sense to me. It leaves all the hot wires=
live, so if your tool grounds one of them, it will spark. Removing the po=
sitive terminal eliminates this possibility.
Some years ago, I put in a kill switch on the ground terminal, and the car =
would continue to run when the ground was open. It only prevented starting=
=2E In fact, this is one of the electrical tests mentioned by John Twist. =
All of my cars have a disconnect knob on the positive terminal. Do I have =
this backward?
Michael Rowe
------------------------
spridgets@autox.team.net
Archive: http://www.team.net/archive
@gmail.com
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=3D=3D=3D=3D=3D=3D=3D=3D
=3D Never offend people with style when you =3D
=3D can offend with substance --- Sam Brown =3D
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osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue vli=
nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span style=3D'f=
ont-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Also you =
mention that with the battery disconnected WITH the engine running, the alt=
ernator (or generator) will supply the power to keep everything running!<o:=
p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:11.0pt;fon=
t-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p>=
<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";color:#1F497D'>That is why racing organizations require that t=
he disconnect switch actually will kill the engine (wired wrong, the batter=
y will be disconnected but the engine will still run=E2=80=A6 a real safety=
hazard in a racing accident!)<o:p></o:p></span></p><p class=3DMsoNormal><s=
pan style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F4=
97D'><o:p> </o:p></span></p><p class=3DMsoNormal><span style=3D'font-s=
ize:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Paul<o:p></o:p=
></span></p><p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-famil=
y:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p clas=
s=3DMsoNormal><b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans=
-serif"'>From:</span></b><span style=3D'font-size:10.0pt;font-family:"Tahom=
a","sans-serif"'> Spridgets [mailto:spridgets-bounces@autox.team.net] <b>On=
Behalf Of </b>John Innis via Spridgets<br><b>Sent:</b> Wednesday, January =
13, 2016 11:52 AM<br><b>To:</b> MICHAEL ROWE<br><b>Cc:</b> Spridgets<br><b>=
Subject:</b> Re: [Spridgets] Battery disconnect<o:p></o:p></span></p><p cla=
ss=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>It really doe=
sn't make a lot of difference which one is disconnected, either will preven=
t any danger of a short. But there is a good reason to do the negativ=
e, or at least do it first. The reason is that if your wrench acciden=
tally hits a part of the body or frame while removing the negative terminal=
, it is not a problem because they are normally connected to the negative t=
erminal anyway. But, if your wrench slips while undoing the positive =
terminal and hits the body or frame, you are arc welding. Once the ne=
gative is disconnected, there is no path for current back to the battery, s=
o the risk is eliminated. <o:p></o:p></p></div><div><p class=3DMsoNormal><o=
:p> </o:p></p><div><p class=3DMsoNormal>On Wed, Jan 13, 2016 at 11:44 =
AM, MICHAEL ROWE via Spridgets <<a href=3D"mailto:spridgets@autox.team.n=
et" target=3D"_blank">spridgets@autox.team.net</a>> wrote:<o:p></o:p></p=
><p class=3DMsoNormal>Instructions for working on the gauges of my Toyota s=
ay remove the negative battery terminal. This makes no sense to me.&n=
bsp; It leaves all the hot wires live, so if your tool grounds one of them,=
it will spark. Removing the positive terminal eliminates this possib=
ility.<o:p></o:p></p><div><p class=3DMsoNormal><o:p> </o:p></p></div><=
div><p class=3DMsoNormal>Some years ago, I put in a kill switch on the grou=
nd terminal, and the car would continue to run when the ground was open.&nb=
sp; It only prevented starting. In fact, this is one of the electrica=
l tests mentioned by John Twist. <o:p></o:p></p></div><div><p class=
=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>All of my=
cars have a disconnect knob on the positive terminal. Do I have this=
backward?<o:p></o:p></p></div><div><p class=3DMsoNormal><span style=3D'col=
or:#888888'>Michael Rowe<o:p></o:p></span></p></div><p class=3DMsoNormal st=
yle=3D'margin-bottom:12.0pt'><br>------------------------<br><br><a href=3D=
"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a><br><br>Donat=
e: <a href=3D"http://www.team.net/donate.html"; target=3D"_blank">http://www=
=2Eteam.net/donate.html</a><br>Suggested annual donation: $12.75<br><br>Arc=
hive: <a href=3D"http://www.team.net/archive"; target=3D"_blank">http://www.=
team.net/archive</a><br>Forums: <a href=3D"http://www.team.net/forums"; targ=
et=3D"_blank">http://www.team.net/forums</a><br>Unsubscribe/Manage: <a href=
=3D"http://autox.team.net/mailman/options/spridgets/jdinnis@gmail.com"; targ=
et=3D"_blank">http://autox.team.net/mailman/options/spridgets/jdinnis@gmail=
=2Ecom</a><o:p></o:p></p></div><p class=3DMsoNormal><br><br clear=3Dall><br=
>-- <o:p></o:p></p><div><p class=3DMsoNormal>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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=3D Never offend people with style when you =3D<br>=3D can offe=
nd with substance --- Sam Brown =3D<br>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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spridgets@autox.team.net
Archive: http://www.team.net/archive
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