12 Volt Marine Battery Switch Wiring Diagram

This rocker is perfect for an engine off run start switch.

12 volt marine battery switch wiring diagram. It is off at the bottom on in the center and momentary on at the top. I allows your house and start battery to remain isolated except for emergency conditions. The reason the switch is placed in line between the terminals rather than the terminals which you would usually do if you were wiring switch at home is because the negative cable from the existing battery connects to the metal parts of your boat and so it s important to can change the voltage that flows through the boat. The most obvious and most common is simply to use it to turn off your battery when in storage so that your battery does not drain as quickly and is ready to go when you are.

Two battery boat setup with wiring diagram. You can learn much more about dc systems from his two essential books on the subject. Super easy boat wiring and electrical diagrams step by step tutorial. Marine battery wiring and install onboard battery charger fuze breaker.

The wiring diagram below will demonstrate how to to wire and power this 12v 20amp on on off 3 way carling contura rocker switch. 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. This dual battery setup for boats uses the blue sea add a battery kit for charging marine batteries. For more detailed wiring guidelines please consult a qualified marine electrician or one of the many.

There are many ways to use a perko battery on off switch. The 12 volt bible for boats 2 nd edition and the powerboater s guide to electrical systems. Blue sea two battery switch acr dual charging system. We ve changed the diagram a bit now to show the start battery running through our new marine battery switch.