I have converted a 2N to 12 volt using a Motorcraft alternator, external regulator,and 12 v coil with external ballast resistor. It has always worked well. I want to add a typical Ford automotive solenoid switch (4 terminal) so it will start from a new key switch (not the manual button), and provide 12v to the coil when cranking by running a wire from the solenoid ignition terminal to the coil side of the ballast resistor. I didn"t find anywhere on this forum that anyone has done that and thought there must be a reason. I realize the factory neutral start feature would be eliminated, but I have an idea how to do that electrically. Comments?