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Message: <blockquote data-quote="jrwalte" data-source="post: 4619534" data-attributes="member: 584454">It's most likely your ground.  I'm sure they picked a shitty spot. And depending on your length of wire, 4g is pushing it for 1450RMS.  2g+ would be better.To test the ground you could take a run of 4g from the front bat negative to the amps and see if it doesn't shut off.  You should also get a DMM if you don't have one to see what your voltage is doing under heavy loads. But as said, you'd be best off upgrading to a larger wire size. 1/0 is the next common step up.</blockquote>

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