Invisible wrote:

> Interesting. I've never seen any car where turning the ignition 
> *doesn't* disable all the other electrics in the system [including the 
> headlights].

IME disabling all electric devices on startup is still very common 
practice, simply because it's a wise thing to do (it makes the voltage 
to drop a little bit less than with having them enabled).

> As I understand it, turning the starter motor requires a massive amount 
> of current, and is essentially the *only* reason a car has such a 
> whopping great battery in the first place. (Certainly it's not necessary 
> just to run the spark plugs... or even the headlights...)

Yes. Another reasons for whopping great battery would be a 

stereos, that can be used while the engine ain't running.

-- 
Eero "Aero" Ahonen
    http://www.zbxt.net
       aer### [at] removethiszbxtnetinvalid

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