Kill switch master disconnect cut off ???

How is running the switch through the ground side easier to do or easier on the switch? You have the same amount of voltage or amperage on either side of the battery. The easiest thing to do is wire the switch through the positive side like you are supposed to do. I always run mine straight to the positive side of the battery, and also tie in the positive side of the ignition. That way, it kills ALL power including the engine, INSTANTLY. Running it to the ground does not insure that.