Not sure about all of them, but the new exciter wire should be in RUN only at some point.
Not that it won't work the way you have it, but any time you're sitting there with the key in ACC listening to the radio or whatever, your alternator is juicing up too.
I don't think it will automatically hurt the alternator, and may only use a tiny bit of extra battery juice, but one of the others with more knowledge in that department can say for sure.
But Ford used a position that was hot in RUN only. You should be able to see it right there on the back/side of the ignition switch in fact. It might even still run out to the right side of the engine compartment where the old voltage regulator was/is.
Paul
