Working of charging system of two wheeler: The main components of two wheeler charging system are- 1.Battery 2.Regulator cum rectifier unit (Regulator and rectifier are assemble in one unit) 3. Generator (Magneto) assembly 4. Fuse 1) Generator produces an A.C. supply of 12 V. 2) Blue / white (L/W) wire supplies 12 V A.C. from generator to regulator cum rectifier unit. 3) Regulator controlled the supply of current and voltage whereas rectifier converts A.C. supply in to D.C. 4) Regulator cum rectifier unit supply 12-14.5 V D.C. to the battery with the help of filament type fuse. 5) This fuse is having capacity to deliver 12 V to 16 V and 15 A current. 6) In case of failure of fuse it disconnects the supply from regulator cum rectifier to battery.