Just went through all of this. The neutral safety switch and clutch safety switch tie together, it is a red/blue wire that normally goes to the ford starter solenoid. If you trace it back, it splices into an 18g white/pink wire from the ignition switch, run this to a separate relay that will go to the starter, I will post my thread on the wiring, it is very simple to do actually.
This is my thread it should answer pretty much all your questions about wiring. Foxbody and PSI Conversion guys
Edit: Just realized the correct picture was taken down. The only difference from the drawing on the second page, is that the white/pink from ignition switch to starter, runs through a separate relay first.