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Date:         Fri, 14 May 2010 18:06:59 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: Headlight wiring for 80/100 bulbs
Comments: To: dvdclarksn@AOL.COM
In-Reply-To:  <8CCC1B9FB93AD84-1298-F6FD@webmail-d056.sysops.aol.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 04:20 PM 5/14/2010, David Clarkson wrote:
>Could this be related to the lights and speakers sharing a common
>ground at some point?


Absolutely.  You've nailed the problem, I bet.  Because the
headlights draw a lot of current they raise the voltage of the ground
point and you're getting alternator noise feeding back into the audio
system.  I bet the whine changes pitch when engine rpm changes.


Yours,
David
"Grounds are funny things" -- unsung gardener.
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