Adjustable Electric Heating Pad Switch

1 Remove the switch from the dashboard.
2 Bend up the catches and remove the cover with thumbwheel.
3 Unsolder the bulb from the printed circuit board.
4 Use an ohmmeter to check that the defective component really is the bulb and not the circuit board.
5 Solder the new bulb in place.
6 Press the cover with thumbwheel into place. Make sure that the thumbwheel hooks into place on the control lever.