sorry, i have no idea on that the socket number would be.
in the past, i have made a cable with just wires.
i remove the socket and solder the wires to the socket. (the single wire for the focus i just split into 2 wires and hook both up)
i don't have a spare dual focus socket to use but when i get one, i plan on leaving it on there.
you should be able to figure out the pinout by looking at the backside of the neckboard...(usually have them marked R/G/B/H/GND etc.)