Frankazoid

4) Where is the black+red wire that runs to neutral safety? As it is now there is only one green+black wire that is labeled "neutral switch".

That is the neutral switch - it's on the side of the transmission on the manual tranny's. It's a single wire that is either grouded or not grounded depending on if it's in gear or not.

5) The black "tach signal" wire is power for the tach?

Yes - that is the tach signal for the gauge.