Posted by RAB on November 30, 2008 at 04:14:25 from (195.93.21.10):
In Reply to: Re: 6 volt to 12 volt posted by DiyDave on November 30, 2008 at 03:53:26:
Quite clear but he may need reminding not to forget that any bulbs will pop if not changed out.
He would be better adding a ballast resistor between the supply from the ignition switch to the coil. Starting will be improved if the coil is fed directly while cranking (bypassing the ballast).
Cen,
You don't say whether you are changing dynamo (DC generator) to alternator (usual method) or simply changing dynamo generator to 12 volts. Assuming alternator generator as you are changing polarity to negative earth.
Any 12 volt alternator will work if it will fit and has enough generating capacity for your particular situation.
Very few 'other guages and meters' fitted may need polarity changing. Radio, if fitted may have optional polarity change-over, but probably not a voltage change-over (unlikely to have a radio fited to a tractor of that era, but you never know....).
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