Adapted from this thread: and
this one too:
Don't follow this! it's not complete yet.
Updated with dizzy wires and fuel pump relay stuff.
Closer to a working map.

still a work in progress
If you look at the wiring manual, it shouldn't be too hard to wire. the GA16 isn't specifically mentioned, so you will have to know what the wires do.
you will find SAFCII manuals here:
Setup manual Wiring Manual (FWWIW)
or from A'pex
here