If you kept your bike on a battery tender over the winter, your battery is likely in good shape to start the season. Turn on the electrics and get a friend to help you make sure your headlight's low beam and high beam functions both work, as well as front and rear turn signals and brake lights. Lights in your instrument clusters should be in good working order, as well. If anything isn't working as it should, now is the time to replace affected light bulbs before you get out on the road. If nothing comes on, your battery needs to be jumped or possibly replaced.