Blue sea 6001 battery switch is our recommended solution for a single engine two battery marine setup. See images for wiring diagram and guide.

Ck 5914 Battery Switch Wiring Diagram Dual Battery Wiring
Blue sea battery switch wiring diagram. Assortment of blue sea dual battery switch wiring diagram. This diagram is for reference only. Al pertaining to the blue sea equipment you have it wired the way that the manufacturer suggests. Our approach to this category uses different equipment same switch but different voltage sensing relay and our scheme will change according to the boat type whether the stereo is dependent on the helm buss for touch screen controls or can be wired totally. To start battery 4. Proper battery management including switching and charging is essential for safe and reliable operation.
Here is a informative video by jim at portland marine electronics on how a acr can help give you the power. Blue sea system is the leader in battery switches for automatic charging relays acr. To engine terminal of battery switch 3. To house battery alternator connected to a larger battery bank is most efficient. Alternator wiring configuration does not affect acr installation. This is a complex category.
A wiring diagram is a streamlined conventional photographic representation of an electrical circuit. The following basic wiring diagrams show how batteries battery switches and automatic charging relays are wired together from a simple single battery single engine configuration to a two engine one generator and four battery bank system. Blue sea two battery switch acr dual charging system. This dual battery setup for boats uses the blue sea add a battery kit for charging marine batteries. Battery alternator wiring may include the following. It shows the parts of the circuit as simplified forms and the power and signal links in between the devices.
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