Red58, the only 12v thing I have bought is the battery. I can put that one to use in another of our vehicles. I have made up my mind just to leave it 6v for now anyway. Right now what I have tested has worked and if it works now why mess with it now? And even though the starter is supposed to be able to work on 12v and even more than that it seems to me that it sure burnt mine up quick, and when I talked to Gasandaspark last night he said the same had happened to him on one of his previous trucks. So really I haven't bought anything that I can't use or take back. And as for NAPA, I don't know why they said to charge it.
