Yes, John the cold starts are always 12v in all the 140's. When I read your post I had figured your's being the early type might have been different, but if you have no reason to think otherwise, then yes it's 12v.

Further logic is that that circuit is a simple switch, insofar as the brain's control of it is concerned. The injector ciruit is, of course, a much more complex type of control. No reason to suspect they had to share the voltage level, as they are such separate functions.