got one on mine too, you dont need to run 2 wires from the fan switch, just the 1 will do, run it to an overide switch that switches to any decent ground point behind dash and provided your connected to the right side of fan switch the overide will controll your fan. if you then also run the switched ground to a flashing l.e.d with a fused ign + you will know when your fan is on wether you've overridden it or not