In the process of getting my M to start better in the last few days I got to thinking about if the 12 volt conversion that I had done some 20+ years ago was charging. I looked and found that the alternator is a Delco-Remy 1100696, 42 amp. 7D18-12v neg. ground. I am going to take it in this A.M. and have it checked to see if it still charges, but my question is most all of the conversion kits that I have found come with a 63 amp. alt. When I did the conversion I still used my original 6 volt coil and 6 volt starter with a resistor. If I remember right I copied the wiring diagram from my neighbor who was a IHC mechanic at the time. Also a lot of the videos and articles I have watched and read mention using a 12 volt coil and a 60-0-60 ammeter. Should I change my ammeter from a 30-0-30 to a 60-0-60 as I have always noticed that it never did show the 30-0-30 to be charging?