[Spridgets] Kill switch

[Weslake1330 at aol.com]

The big resistor is there to stop the rectifier diodes in the alternator  
frying/self destructing when the switch is thrown with the engine running at an  
rpm above the alternator kick-in rpm.  The resistor is a biggy.
 
In a message dated 15/10/2008 17:52:32 GMT Daylight Time,  
peter at nosimport.com writes:

Dave,
I'm not an engineer, and I  didn't stay at a Holiday Inn last 
night (though I probably should have)  but there is a potential 
problem shutting of the power to an alternator  with regard to diodes and 
such.

I  worked on a guy's race car with alternator and was 
shocked, literally,  because he had the wrong switch.
This  link, by no means an endorsement, addresses the 
alternator issue. Maybe  you can understand it better than I.

http://www.pegasusautoracing.com/productdetails.asp?RecID=1464

Peter  C
====
At 11:38 AM 10/15/2008, Dave G. wrote:
>That's not the  question I asked...
>
>I can use a simple circuit employing a  double pole industrial 12V 
>relay switched
>by a single pole  switch to cut both lines at once or use an 
>off-the-shelf  purpose
>built switch.
>
>My serious question is "If I cut  power from the battery *and* I cut 
>power from  the
>alternator"  what's left --- doesn't that remove all power  from all 
>electrical circuits
>in the  vehicle????
>
>On 15 Oct 2008 at 12:24, Weslake1330 at aol.com  wrote:
>
> >> And is opening the circuit the lead from the  alternator live or ground
> >> and if it's live how is this thrown  on the same switch as the battery
> >>  ground?