Up for sale is a push in Bulb for you Pfaff machines.  12 Volts , 6 watt . Will replace and light more than a 4/5 watt bulb.  Bulb has 1 pin contact on bottom. Bulbs are a little over  1" .Part#  4118647-02 . Will also replace part # 92-329975-05  

Will Fit Pfaff Models  2010, 2012, 2014, 2020, 2022, 2024, 2025, 2026, 2027, 2029, 2030, 2034, 2036, 2040, 2042, 2044, 2046, 2056, 2124, 2140 & 2144.