In the diagram above there are no loads shown attached to the HOUSE batteries. The house loads should be connected to the #3 battery and #4 battery, as desired. A typical arrangement will also provide a third battery switch (or perhaps even a fourth battery switch), which will handle the distribution of power from the two house batteries.. If anyone can clarify why and how a single battery switch would be used on a dual engine, dual battery setup I'd sure like to see a diagram. PondTunes Petty Officer 1st Class. Joined Jun 7, 2007 Messages 387.. Agreed the single switch setup probably isn't the best solution and Fox's wiring diagram is another way yours might be set-up. In his.
![[DIAGRAM] Master Dual Battery Switch Wiring Diagrams](http://i.imgur.com/LMWdSrn.jpg "[DIAGRAM] Master Dual Battery Switch Wiring Diagrams")
![[DIAGRAM] Master Dual Battery Switch Wiring Diagrams](https://s3-ap-southeast-2.amazonaws.com/fishraider-ips-assets/monthly_2018_12/1519404654_Dualbatterywiringdiagram.jpg.2ff55d3fdae80734bf1ee4e28a65713e.jpg "[DIAGRAM] Master Dual Battery Switch Wiring Diagrams")
First, you will need to find a suitable spot in the boat to install the dual battery switch. Usually, the most suitable place to install the switch is near the battery or the engine. Then, you will have to place the second battery box near the main battery and secure it with the help of screws and brackets. You will then need to put the battery.. Dual Battery/Dual Engine "New" Schematic NOTE: The battery positive leads are shown in red. The negative leads are shown in green for clarity; code suggests the use of yellow wire. All wiring is AWG-2 unless indicated. The single switch is an OFF-1-BOTH-2 switch. JWH.