World tech elite recon apm v252 v5.0 diagram

i have a apm from a world tech elite recon follow me drone.It is the same exact F/C thats in the cheerson cx20 only difference is the con board on my apm is a ribbon cable . i already have control using my th9x transmitter by going through the ppm pins directly. what i cant seem to find is a diagram on this exact board with all pins labeled. i did some trace with MM and found gps pins but time consuming. can anyone help me out

thank you and sorry for my bad english

This is the pinout of the Cheerson FC,if that helps.