2003 road kings have a 12 volt electrical system
24 volt
12volt
12 Volt
24 volt armature is accept balancing cut
12 volt
With a 12 volt battery charger that is made to plug into a 220 volt circuit.
Not by connecting them directly, that'd be too powerful.
Because 240 volts is dangerous
if the vehicle it is in is a truck i would say 12volt if it is in a bus it is 24volt this is only due to the starter and the direction the starter will turn
36 watt / 12 volt = 3 amp
Yes, there are some websites such as this: http://www.12volt-travel.com/12-volt-15-quart-slow-cooker-p-5926.html how to heat a potato with a 12 volt air compressor.
Depends on the amperage of the batteries you are using. Both setups will give you 36 volts, but you will normally have a longer run time with six 6 volt batteries in series than three 12 volt batteries. That is why golf carts use 6 volt instead of 12 volt batteries.