I realize that this doesn't answer your question, but I can tell you where NOT to get the power from. There are numerous stories of people powering their choke from the coil. This acts as an effective rev-limiter and you will be unhappy with the results. You'll need to find another source.
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Charlie McCall
1985 DeTomaso Pantera GT5-S #9375
"Raising Pantera Awareness across Europe"
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