Wiring help for trunk mount battery

When referencing the diagram at the top of this thread, if using a one wire alternator in a drag car that has no factory wiring, where does the alternator output wire come into play? Also, I'm using an MSD7AL-2 ignition, would the +12V 'ignition exciter' wire, from the ignition toggle switch on my switch panel, take the place of the 'field' wire going to the CDR in order to kill the ignition when the kill switch is thrown?
He has a photo and diagram here:
questions about battery disconnect wiring

As far as alternator output wire, not sure what you're asking, but basically it supplies everything once the engine is running.,
If the MSD 7 is like the 6, it sounds like you're talking about the wire for the internal relay. That wire is your on/off switch. Connect it to power and a small current turns on a continuous duty relay inside the MSD.