Quoting Removed, click Modern View to seeWell, sort of but not really.
If you have 2 circuits designed to do the same job, one intended to be 6 volt and the other 12, the 12 volt circuit will draw half the current. Lower current only needs smaller wires. If you have a simple resistance circuit designed for 6 volts and apply 12 volts, it will draw twice the current until something melts.
However, a starter is not a resistance curcuit. It is (surprise!) a motor. When a motor is spinning, it acts like a generator. The voltage produced pushes back against the voltage from the battery, reducing the current that is flowing to the starter. The faster the starter spins, the greater the back voltage and the less the current. A free spinning starter produces a lot of back voltage and draws surprisingly little current. This is also why bad cables get hot so quickly when a starter is jammed. If the starter isn't turning, you have a virtual dead short.
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Today's Featured Article - Two-Brush Generators - by Chris Pratt. Whether for product liability or because the aftermarket parts and labor business is lucrative, this concept is disturbingly prevalent. Fortunately when you step into your shop and make that jump 50 years back in time to work with your old tractor, this concept goes out the window. Even so, when it comes to the charging system, people quickly revert to this idea and start replacing the major components one at a time until it works. The reason you don't find any decals in your replacement set wit
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