No power in the swith starter - Cars & Trucks

I'll guess that what you mean is there is no power to the starter switch. It would help, always, to know what you are working on, but in general, most cars have fusible links to protect major circuits. Yours may have blown a fusible link powering the ignition switch, or if you meant the starter solenoid, perhaps the link to it. If you are unfamiliar with these links, google "fusible links".