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Message: <blockquote data-quote="azeroth123" data-source="post: 3682163" data-attributes="member: 582020"><p>no not really the isolator does what it sounds like, when the car is running both batteries charge, but the system/rear battery is isolated from the rest of the cars electrical system. So basically if the engine is off and you are running your stereo, the rear battery will drain and will go dead eventually but the engine battery will not be drained and you can still start the car ect.</p></blockquote><p></p>

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