You will need a screwdriver.
1. Disconnect the wire from the terminal «–» battery.
2. Gently pry off the cover housing with a screwdriver.
3. Remove the three plastic latches from the upholstery of the ceiling and remove the cover.
4. Disconnect the two blocks with wires from the terminals of the ceiling.
5. Wring out two plastic latches..
6.... and remove the holder with the cartridge and the lamp from the housing.
7. To replace the bulb, turn it 90°and remove it from the socket.
8. Collect and establish a plafond in an order, the return to removal. Install the holder with the cartridge into the housing so that the lower contact of the holder fits onto the sliding contact of the switch in the housing.