Since you already have electronic ignition upgrading to a solid state isolated field regulator would probably be best. your original altenator has a single green wire from the rgulator to one field terminal. The original regulator has a blue at the top and a green at the bottom. The solid state regulator will use these same wires and you'll simply splice the blue at the regulator to add approx. 7 feet of blue wire to the second field terminal on the altenator. Because this added blue wire will be hot in run, I take the time to back the right branch of the engine harness out and over the left fender, untape it and tape the blue wire in with like factory. the original terminal that you cut off the green wire at the regulator will be reused on the alternator end of the new blue wire.