7443: Standard Type with 2 filaments, same functions as 1157/3157
7440: Standard Type with 1 filament, same functions as 1156/3156
Features & Application :
- 12VDC: Car/Motorcycle/Scooter
- 24VDC:Truck/Trailer/Boat (some boats are compatible in both 12/24V)
- 7443: Same as 1157/3157
- 7440: Same as 1156/3156
- 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