This is an on/off switch on a control board that's permanently on from the wall socket, I've a 5 wire latch switch I intend using https://shorturl.at/dJuNf
I know the red wire lights the LED which I assume goes to the 12v pin, the black is a ground wire I assume goes to the middle ground pin, to turn the control board off i've been told I need to ground the 0n/Off pin. (the green wire is marked C for Common, the white NO for normally open & the yellow NC for normally closed, it has me stumped because no matter what I've done the control board won't switch off.
Your thoughts please.

Ignore this as it's now sorted and working fine.