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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