Sorry for the delay in replying.
Thanks for the suggestion, but what I really need is to have an example diagram to connect a relay to the output (pin 4) of the Power Socket connector.
If the example of the open collector output (pin 3,4,8) is well explained here
I miss it, and I don't find in the wikis or in the diagrams a practical example for the output port (pin4) of the power connector, considering that pin 3 is an input and pin1,2 are power supply.
I hope I have explained.