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post #3 of (permalink) Old 05-01-2012
Yadkin
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Whenever you open or close the trunk you are changing the electrical characteristics due to inadequate grounding of the lid. Install a ground wire from the trunk lid to the chassis. Also ground the amps and any other metallic part of the sound system.

And don't asume the threads of a sheet metal screw are an adequate ground. Use grounding washers and grind the paint off where the washers sit, then prime and paint over the tightened screws.

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