No, thats a notch on socket body to identify which is top or bottom.
#1 & #2 are for low & hi beam, cut the wires and each (+) goes into 8 pins connector. Leave the (-) of hi beam.
The 2 pins connector goes into 8 pins (pin #2 & #7) and connect to original small lamp socket.
It connect to driver side original H4 connector, leave the passenger side unplug.