ISSUE Level Shifter help

Please could someone help me in the correct wiring diagram for this level shifter for me.

 

5V to LED power supply (+), 3V3 = to a 3.3V Pin from RPi
GND to LED power supply (-), GND = to a GND Pin from RPi
HV1 to LED Data In, LV1 = to Pin 19 from RPi
HV2 to LED Clock In, LV2 = to Pin 23 from RPi

 

That’s great Thankyou and this will eradicate the flicker issue is that correct ?

 

In the most cases, yes.
You should better use also a shielded cable, like an unused USB-Cable.

 

Ok thankyou