You will need: lamp A12-4 (Only wattage and voltage are indicated on the lamp).
1. Rotate the headlight housing cover 90°counterclockwise.
2. Take out the bulb holder.
3. Press lightly on the bulb, twist into the slots and remove from the socket.
4. Insert a new lamp so that the projections on the lamp base fit into the slots in the socket, press it lightly and turn until it locks. Insert the cartridge into the headlight and close its cover.