1973 Regulator
CAUTION:
"D+" terminals on regulator must not be disconnected with engine running as field windings on generator will burn out.
Disconnect "D +" lead from generator. Connect a 15-0-15 amp. ammeter between lead and "D+" terminal. Connect ammeter positive terminal to generator and negative terminal to disconnected lead. Start engine and allow to run at fast idle. Reduce idle until ammeter moves to negative range (see specifications). Turn engine off. Ammeter must jump back to zero before engine comes to a complete stop. If ammeter does not return to zero, cutout relay is defective and regulator must be replaced or adjusted.