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<blockquote data-quote="Mommy Wagon" data-source="post: 7971362" data-attributes="member: 641740">I had calculated 150 amps, using an approximated value of 1,800 watts at 12 volts - again low level ohms law calculation without efficiencies or exact voltage taken into consideration.Maximums from the amps based on full volume and 4ohms:Kicker 2500.1 = 1250 wattsKicker 650.4 = 480 wattsThis basic and very simplified estimation with ohms law assured me the factory alternator left alone will not hold up to the demands of the audio equipment. I know I will never see 100% volume or system load, and the odds of adding more equipment later is slim to none in this vehicle.As far as dual vs. single, both are simple and very easily accommodated. For batteries; I will be placing both in the engine compartment, as GM was good enough to supply dual battery trays from the factory. I do like the idea about having the stereo isolated, though has anyone ever had an electrical spike from stereo current draw that caused catastrophic failure to other electrical components?When I head out to the shop today to complete the wiring I will be measuring to see if I can fit a Group 65 battery in both locations. It would appear the additional 2&quot; in length offers a massive difference in CCA and Reserve Capacity accross most manufacturers.</blockquote>

[QUOTE="Mommy Wagon, post: 7971362, member: 641740"] I had calculated 150 amps, using an approximated value of 1,800 watts at 12 volts - again low level ohms law calculation without efficiencies or exact voltage taken into consideration. Maximums from the amps based on full volume and 4ohms: Kicker 2500.1 = 1250 watts Kicker 650.4 = 480 watts This basic and very simplified estimation with ohms law assured me the factory alternator left alone will not hold up to the demands of the audio equipment. I know I will never see 100% volume or system load, and the odds of adding more equipment later is slim to none in this vehicle. As far as dual vs. single, both are simple and very easily accommodated. For batteries; I will be placing both in the engine compartment, as GM was good enough to supply dual battery trays from the factory. I do like the idea about having the stereo isolated, though has anyone ever had an electrical spike from stereo current draw that caused catastrophic failure to other electrical components? When I head out to the shop today to complete the wiring I will be measuring to see if I can fit a Group 65 battery in both locations. It would appear the additional 2" in length offers a massive difference in CCA and Reserve Capacity accross most manufacturers. [/QUOTE]

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