I just finished wiring up my truck with the new ESC, and Motor..
I have the integy heatsink fan wired in now as well.
I have a y type connector.
ESC fan works in y connector, and straight in to ESC so i know the Y and the other cable are solid.
Integy fan lead doesnt work in either the ESC or the Y connector, which leads me to believe the fan is either broken or wont kick on until it reaches a certain temp.
Anyone know for sure? or does your integy kick on right away?