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Message: <blockquote data-quote="DRAGG5.8" data-source="post: 2817051" data-attributes="member: 575394"><p>A Factory Alt. Is Designed To Put Out Enough Amps To Supply The Vehicle And Its Systems As Designed By Manufacturer. Anything Added, Such As A System, Puts An Enormous Extra Load On The Alt. That It Can't Handle. Find Out Exactly How Many Extra Amps You Will Be Pulling Then Add That To What The Alt Puts Out Now. Thats The Size Output Alt. You Need At Minimum. As For The Second Battery, Only If You Also Install A Multiple Battery Isolater Otherwise You May Have Some Dead Battery Issues From Time To Time. If I Had To Guess, I Would Say That The Factory Alt. Puts Out About 90-120 Amps. For Your Purpose I Would Start With The Lower Value (90 Amps) For Your  Calculations. Also, A 1 Inch Wide Braided Ground Strap From Each Battery Neg Post To The Body Will Do Wonders For Your System.</p></blockquote><p></p>

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