I have a Honda pilot 2004 the radiator fan works iwhen I on the AC or when the engine gets to a certain tempreture.
But I want the fan to work when I on the ignition so can I pass the fan to work directly . Thanks

 

yes you can, place a hot switch directly to the fan using a fuse for safety and turn on at will with engine running or not running. with ignition off . just be aware if you forget to turn the switch off, your battery will go dead.