Bypassing the Amp gauge - Question about the MAD Electrical method

This is where I got lost. I didn't see any wire on the starter relay marked alternator in the updated photo, and you wrote there is only one lead connector at the alternator output stud. Help me out here.
That is because the black alternator wire was still connected to the ammeter. It is ready to be connected to the starter relay now as I have up sized the wire and added a fuse link to it, it is not actually connected yet.

And then is a neutral safety switch used, or is it grounded to the fender or engine?
It is currently grounded with the volt meter on the firewall. It is a 4speed car and I know NHRA requires a safety switch, weather it be neutral or clutch. That switch is something else that has me concerned. The plug from the transmission has three wires coming out of it, one of them is brown and the other two I believe are black. It is as simple as connecting the brown to the post on the relay? If so, then what are the other two wires for?

I'm guessing the light blue wire on the coil negative goes to the tachometer?
It does.

Man, I really appreciate the effort you are giving this. I can do most of the wiring/splicing/adding new runs, ect. I just need some reassurance that I'm doing it right and that's why I'm asking.... :)