Guys come on I have wired up houses being a contractor....No way am I going to run 20amps or so on the one ignition power wire...Relays are a must or I will be blowing the ignition fuse or worse fry the wires with adding a stronger fuse to hold both the ignition and fan power....Direct power wire comes from the battery and in addition I installed a 30amp fuse on the wire to a relay..... Insulated all wiring and tucked it all as far away from the engine as possible.. I think this is the best way to go to avoid future cooling problems...Just the fans will run even when the car is cold unless I decide to use the in cabin fan kill switch.... What do you guys think?