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Message: <blockquote data-quote="DidUHearThat?" data-source="post: 5662175" data-attributes="member: 594758">Is your main audio wiring already 0 gauge and you've done the Big 3 in 0 gauge as well?What size alt?What size main bat?The main reason for a second batt is increased reserve capacity.  You should probably consider an upgraded alt, increasing the size and quality of your main batt, and making sure all your audio wiring and Big 3 is 0 gauge.  After you've done all that, then you can consider adding a second batt for increased reserve capacity if you still need it.I've seen many very good systems with only a good main batt, big alternator and good wiring that work great with no dimming issues.Improve the quality of what you've got before you add more.</blockquote>

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