So after opening up the two part connector:
https://www.mobileread.com/forums/sho...1&postcount=24
Make a sketch of the connector cavity, the actual tab will need to be a bit smaller than the cavity for movement clearances.
(I.E: so you can slide it in and out.)
The dimensions shown are in inches.
Sorry, I had to compress the dxf file to get it past the MR attachment restrictions. You'll have to gunzip it.
Next, add the contact points to the sketch of the cavity, decide on what shape and size to make the mating insert tab.