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Message: <blockquote data-quote="black pearl" data-source="post: 8162675" data-attributes="member: 656701"><p>we have not started the install yet so there is just factory replacement speakers in my Tahoe now (focal's) I have a optima red top in the stock location and did the big 3 upgrade, and everything was fine. I just installed a new xs power D3400 under the hood in the 2nd location. 1/0 gauge wire rand to the alt. and grounded to the alt bracket, now when I start the truck the voltage reads high 14's,(volts) after a few miles down the road it has dropped to mid to high 12's (volts) and this is with just a kenwood head unit and 2 set of focal components, NO AMP at all. any idea whats going on</p></blockquote><p></p>

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