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

 

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

 

  Features & Application :

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

 

  Mutual Replaced By or usually well known to call :

W21W