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Message: <blockquote data-quote="reclessantics" data-source="post: 5124578" data-attributes="member: 603282">i was just going to run a 4g (or if i need to a 0 ga) from the stock chevy battery to the optima yellow under my backseat.  then id run another 4 or 0 ga, to a fuse holder, then to a distribution block.   and of course id ground the second (optima) battery to something close by.  i don't really listen to music without the truck on, so its not a huge issue of draining either battery.  but wouldn't the optima (being larger and stronger) try to charge the stock  battery? im guessing that is why its suggested to snag a battery isolator when installing the second battery.thankskyle</blockquote>

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