um f its jsut clicking u sure u have a good connection at the battery and teh battery is fully charged??....if so the the starter is probably bad......
but as for wiring....1 big wire comes in form batt +...the other big wire goes to starter...if its starter mounted solenoid only the 1 big wire form batt to hook up..........then the small wire form ignition switch goes to the terminal marked S....the terminal marked I is for accessories.....