Sorry for the incomplete thought: the point was that your idea should work fine, though I imagine you couldn't sit and use it long term, but for 10-15 minutes it would probably stay warm, and certainly enough to take care of EOC. as for wiring, if you have a toggle kill switch, you could maybe figure a way to have the toggle disconnect your fuel injectors, and at the same time cut power to a normally closed relay that runs this little pump. Of course the pump power would have to also run through ignition, or else be manually toggled off when you shut the car off or drain the battery dead.
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