Quote:
Originally Posted by 99dart
Oh, let's just disconnect them both! LOL
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It's not a matter of one or the other (or both) as either one being disconnected will stop the flow of current from the battery; it's a matter of safety. Since the negative side is connected to the frame and most metal in a car or MH, if you put a wrench on the positive side and accidentally touch any surrounding metal you will get a big arc and current draw. This would only happen when disconnecting the negative side if you touched the positive terminal with the wrench.