In cause the fuse mustn't be on the right place it's the first step to have a look about powerinput at the switch. The easy way: take a 12v bulb and put one cable to middle contactpoint and the other cable to the outside metal.
If the switch is broken the light would work if you fix the cables together as you had done.
If there is no power on the cable at the pedal and no fuse is broken (check ecery fuse!) than there may be a problem in the wiring.
Good luck!
René
