You can find the correct pin out of the board and just match it to the standard USB Type A pins
https://s5.electrodragon.com/wp-content/uploads/2014/12/iMac-iSight-cam-04.jpg
There are two GND cables coming out of the cable. I used the smaller cable and left the big one alone (not connected)
Works like a charm. It took me a long time to find out the correct pins.
Hope that helps.