my headlights and tail lights do not work. what may be the problem?

 

have you checked the quick connects under the plastic/handlebar areas? snap them and make sure they are connected well. check the light bulb filaments, just like other bulbs, and see to make sure they ain't burned out either. then, let's take a multimeter and start checking amperage/voltage up/down the wires to/from the taillight and headlight from switches on handlebars and brakehandles including the footfeet pedal.