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## Electrical Theory

 To: "mgs-digest list" Electrical Theory "Fred Pixley" 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 >Kelvin, >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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