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Electrical Theory

To: "mgs-digest list" <>
Subject: Electrical Theory
From: "Fred Pixley" <>
Date: Tue, 4 May 1999 07:23:02 -0400
Perhaps I'm missing something fundamental here but I can't understand why
increased resistance would cause heat and increased current draw.  Ohm's Law
states V=I*R.  If the resistance increases the current and heat should drop.
I'm assuming a constant voltage supply.

>Date: Mon, 03 May 1999 18:47:11 -0500
>From: Rick Huber <>
>Subject: Re: Brake Switch


>You were right, the contacts in the brake switch were corroded,
>therefore drawing a lot of current, thereby making the switch hot and
>not sending enough juice to the brake lights.  Took it apart, cleaned
>the contacts, and put it back in this afternoon, and the lights work
>fine.  Thanks for the help.  The reason the fuel pump slows down when
>the brake lights are on with the car not running is the extra power draw
>to the lights causes the voltage in the whole circuit to drop just a
>little bit, therefore slowing down the fuel pump.  I'm learning more all
>the time.

>Safety Fast,

>Rick Huber
>75 V8 B Daily Driver
>65 B undergoing lengthy restoration

Fred Pixley
Napanee, Ontario, Canada

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