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Message: <blockquote data-quote="Papermaker85" data-source="post: 8577142" data-attributes="member: 572595">Usually limits output and increases amperage so its possible that when you crank it that its pulling additional current to produce the power with the lower voltage.. try to reground the amp as well. Grounding to tge body isn't always bad because tge body has huge surface area to carrry the current but the body when properly bonded  lowers the resistance.  No doubt tge best ground is tge same grounding location as the engine block ground or battery ground.I poor engine block ground substantually lowers the alternators output. Even factory grounds sometimes are less than ideal..</blockquote>

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