engine dying due to electric fan

that was my first thought, but then checked some wiring videos and found they sourced the power (not the main, my fault for not mentioning this, the main power is from the battery) from the ignition (the switch, if I understand the wiring). I have the original diagram for wiring and it the blue wire (off 85 on relay) to be hooked to a '+12 volt power source'. should I move it? and would it be alright to put it back to the battery? have the 4 prong system.