Jonrussell18 Posted December 25, 2020 Report Share Posted December 25, 2020 So I've got the box built for my friends 2008 Silverado. 13 cubes tuned to 29Hz for 4 American Bass 15s if anyone was curious. Currently running a Sundown SFB 1k, well we've decided to skip 3k and go to 5k. We're doing two batteries under the hood, and this is the first system either of us have had that is running multiple batteries. Silverados have a 2nd spot for a battery and we're gonna use it. How do I go about wiring the 2nd battery up? Just run our 2/0 from the starting battery to the 2nd one or have 2 runs of 2/0 coming off the alternator, one for each battery? Link to comment Share on other sites More sharing options...
Dafaseles Posted December 25, 2020 Report Share Posted December 25, 2020 I would do 2 runs from the alternator to battery 1. 2 or 3 runs from battery 1 to 400 amp fuses as close to battery 1 as possible. Then fuses to 400 amp fuses as close to battery 2 as possible, then into battery 2. I would also do 2 ground per battery, but that might be overkill 2011 Chevy Silverado under construction My build log here. Check it out! Link to comment Share on other sites More sharing options...
Jonrussell18 Posted December 26, 2020 Author Report Share Posted December 26, 2020 I like overkill! Thanks for all the help! Link to comment Share on other sites More sharing options...
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