Wire 30 to the plus of the interior battery with a fuse in between. These 2 numbers will be the main circuit from the car battery plus to the interior battery plus IF it’s activated by the switch. Initially the relay wont let any current trough without this trigger. And this condition is what makes a relay so special!
A battery isolator relay is a device that is used to connect and disconnect a battery from an electrical system. It is used to isolate the battery from the system when the engine is not running, and to prevent the battery from being discharged by the system when the engine is off. Let’s dig into it and see if we can find a solution.
Relays are electrical switches that control a larger electrical load and reduce the amount of electric current that flows through a particular circuit in your car. Because your car takes a lot of amperages to function, switches can burn if the car operates without a good relay.
Obviously, a bad relay can drain your car batteries when it doesn't cut power when it should and leaves the power to remain active on many components of the car, even when it's turned off. The role of the relay in your car is important, and it is the factor that power all systems of your car.
This can happen if the batteries are connected in parallel, and one battery becomes discharged. The battery isolator relay will disconnect the discharged battery from the rest of the system, preventing it from draining the other battery. What Are The Benefits Of Using A Battery Isolator Relay?
Start by turning the ignition off before disconnecting your battery. Never try to disconnect your car's battery while the power is on. You then disconnect the battery's negative terminal to ensure safety when you're replacing the bad relay. After that, repeat the same process for the positive terminal. 3. Remove the faulty relay
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