As promised, I am attaching the installation documents. Frankly I'm not sure what was harder, the install, or documenting it. Anyhow, start with the document: 2012_370Z_4704V_Install_Notes. Then the other documents will support that. In general, I suggest printing everything and have them available while working - if you are like me, you will be marking them up and making additional notes.
I'm open to feedback, if anyone would like additional notes or updates, just let me know.
If anyone needs some one-on-one inspiration - feel free to PM me. I'll be happy to cheer you on.
Good luck!
2012_370Z_4704V_Install_Notes.pdf
Custom_Quick_Reference_Guide.pdf
Custom_370Z_DBall_Install_Guide.pdf
Programming_Detail.PDF