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Message: <blockquote data-quote="Lil Poot" data-source="post: 1114875" data-attributes="member: 561892">i've been having the same problem. im using an excessive amperage 200 amp alternator, and a kenwood excelon x979 deck. with my old grounds i got noise whether the engine was running or not. i redid them all, grounding my amps with a 4 gauge wire each to the same spot in the back by my seat belts. i redid all the underhood wiring in 4 gauge, on top of the stock wiring. i did battery negative to the front of one of my heads on the engine, and to the chassis. stripped the paint off all grounding points. the engine is also grounded to the chassis at the back of the opposite head.now there is no noise at all with the engine off, but i get a lot of alternator whine with it running. how do i go about tracking down the problem?</blockquote>

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