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Message: <blockquote data-quote="mattj" data-source="post: 81279" data-attributes="member: 544600"><p>Im trying to test the RCA Preout voltage in my car with a voltmeter and im not sure how to do it. Ive put pos in the RCA preout of my deck and grounded the neg and tried putting pos and neg in each R and L input. Im not sure if my deck is all ****ed up (alpine cda-7894) or something. but how do i measure voltage from it?</p></blockquote><p></p>

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