Quote:
Originally Posted by 51 MERC-CT
Whenever I had to use a 12 volt battery to jump start my 6 volt cars I would do so by connecting the ground side to somewhere convenient on the engine block (not the battery) and then momentarily touch the starter side of the solenoid or directly to the starter cable lug on the starter.
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……...which exposes
only the 6v STARTER to 12v, which many of us get away with for years on end anyway. DD