Wiring diagram!?
Hello.
What do you need to know?
There is very little to the wiring of the old fords.
From the primary terminal of the ignition switch is the feed to the switched circuits.
If the warning lights do not work and were intended to be controlled from the ignition switch, that is the first thing I would check.
Next I would check the fusible link, that is a section of wire with a plastic bulge and numbers on it, to replace it simply cut it out and connect a section of wire 3 gauge smaller than it as the jumper.
I hate test lights that are used to pierce the insulation, the damage will allow the wire to corrode from within.