Mazda Lamp Numbers

 Model Year Head  Aux Head Cowl Tail Instruments
 Durant 25-26 1129  None 63 63 64
 Durant 28-29 1129  None None 63 64
 Durant 30-31   ...  ... 63  63 63
 Flint 25-26 1129  ...  63 63 63
 Flint 1927 1129  None 63 63 63
 Star 25-26 1129  None ...  63 64
 Star 27-28 1129  None None 63 64

Key to Mazda Lamp Numbers
 Lamp Number 63  64

1129 
 Base Single Contact  Double Contact

Single Contact 
 Volts 6-8 6-8

6-8 
 Candlepower 3 3

21 

Bulb Interchangeabilty 21cp and 32cp
21 cp.......... 6 volt 1129 12 volt 1142
32 cp.......... 6 volt 1133 12 volt 1144

Information donated by Jan Arnett