Actually yes. The Black wire is the ground wire connect to the esp. In your picture, the ground connect to the Relay must be the Ground from the ESP or from the other source?
In the picture, I have to remove the Jumper connect the JD and VCC pins and wired that VCC (5V) and GND pin with external source?
and
Don't connect GND to the pin CND next to IN1, IN2. We only use signal pin connect to IN1, IN2 and connect 5V to the VCC?
