2 Field Alternator Question

Thanks HH, the 2 ignition wires will be tied together, I will use a really to switch a direct battery 12v to make sure no weak voltage to the new coil and distributer. Do you know if that would affect the updated VR when part of what is does is complete the ground? Part of reason asking is availability, seems the new style is readily available, old style I will need to keep a back up it seems, overall doesn't really sound like a new VR would provide any better stability with a good install and good wiring.