Before you start making it on your own, please read the 3 easy steps, which can help to understand it.
Step 1 – Insert screwdriver into the upper hole. Push the lock clamp inside down. Keep the screwdriver in this position.
Step 2 – Insert wire/cable into the lower opening
Step 3 – Remove screwdriver. The clamp will lock the cable.
learning this prevent form damaging and incorrect wire/cable connection to the controller.