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Lots of good answers, but will clarify something for what it is worth: All hybrid cars do have a 12V and a high voltage system. In my Prius (2009, 2003-2009 model), the 12v battery is in the boot. The standard car electrics like computers (all 13 of them) and screens and headlight and indicators and everything runs off the 12v battery. The 12v battery is ...


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Fair warning, this is a guess. Vote appropriately... General accepted order: Dead + Good + Good - (directly to the terminal) Bad - (to a good engine ground, but not the terminal) Avoiding the last connection directly to the dead negative is to avoid sparks near the dead battery, but this also avoids sparks near both batteries since the good one is ...



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