Sorry, I remembered incorrectly that the fan is powered by the sidewinder esc. I checked my old equipment and saw that I was running the fan directly from the battery, but that is not really recommended; I second what Waitwhat wrote above and run a servo cable splitter or Y-harness like this one: https://www.amainhobbies.com/parkzon...pkz1063/p21260 if heat makes a motor fan necessary.