Get a multi meter and check the voltage of your battery when the bike is off. If you have left the bike off for a few hours the reading should be about 12.6 volts.
Next start the bike and check the battery while it is running. If the reading is around 14 volts your charging system is OK. If not the problem is probably your alternator. If the battery won't hold a charge disconnect it from the bike and after charging it, see if it holds a charge. If it does you have a grounded hot wire somewhere in the bikes electrical system. Good luck!
Next start the bike and check the battery while it is running. If the reading is around 14 volts your charging system is OK. If not the problem is probably your alternator. If the battery won't hold a charge disconnect it from the bike and after charging it, see if it holds a charge. If it does you have a grounded hot wire somewhere in the bikes electrical system. Good luck!