Fluidyne/Spal Heavy Duty Fan Wiring Harness Kits The last part of your cooling system can often be the trickiest, wiring… Have no fear the Fluidyne/Spal fan wiring kits have you covered and make wiring and controlling your fans a breeze! Simply follow the instructions and in just a few minutes you will have a safe and professionally wired fan control system in place. Features:  165 Off and 185 degree on temperature probe 10ga Heavy Duty  40amp relay  Terminals and Connectors  Weld on 3/8″ Bung for temp probe  (on FAN.FHP185 kit) Fuse Holder Wiring and Harnesses