[ACHiPo]

Patrick,
Bob suggested I wire the VR like it was before the ignition switch was added by jumpering A and S. The A (Y/R wire) and S (W/B wire) terminals are jumpered into the VR. The I (G/R) is removed and isolated (taped).

Looking at the schematic again, I see that I need to disconnect the "S" wire between the alternator and VR. That's hopefully what's blowing fuse 4.