Charging systems were a big deal in the 1960s. When you had Lucas systems that maybe didn't always work, the rest were still 6 volt. The new 12 volt systems were a big selling point. Brighter lights, reliability and carefree electrical performance ! What going to make you buy that new Harley-Davidson???? The beautiful paint? The hot rod cams and valves? Or the new 12 volt electrical system?
PS. What I really want is that cat's argyle sweater . . . and what are these hoods doin' skippin' football practice? Anything to get the chics.