3157: Standard Type with 2 filaments, same functions as 1157/7443

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 3156 : Standard Type with 1 filament, same functions as 1156/7440

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blank  Features & Application :

  1. 12VDC: Car/Motorcycle/Scooter
  2. 24VDC:Truck/Trailer/Boat  (some boats are compatible in both 12/24V)
  3. 3157: Same as 1157/7443
  4. 7440: Same as 1156/7440
  5. 3157 functions in either 3157(Double) or 3156(Single) sockets and has extra contact that connect to nothing if install for 3156 function, which means 3157  can replace 3156, but 3156 is not available to replace 3157.

 

blank  Mutual Replaced By or usually well known to call :

3057 3155 3357 3457 4157 3456 4156