yamaha aerox?

i have a aerox 50cc 2stroke can anyone tell me where the rectifier is and the starter relay also the digital clock has just 3 lines what are they i put a battery charger on to the battery leads to test the electrics back brake and indicators work but it wnt start on the electric starter it has no battery conected but ut should still the the noise of trying to start electrically shouldnt it thanks for your help