Here is the wiring for the FBV that works for me.
You can find the wiring for the MIDI part on several places on the net.
you can find a good documentation for FBV and MIDI in this project, which startet 2 years after mine.
https://github.com/kquann/FBV_MIDI
i recently did a nice mod to one of my FBVs, have a look
modifying my FBV Longboard into an universal controller for MIDI
if you have detailed questions i will try to help.