I just recently did my switch over due to a failed original pump. I got the 40105 and it has worked perfectly. As stated the pump is not receiving power unless the ignition switch is pushed and the bike is running. If you put a test light on the power side it will not be live until you are turning the bike over.
This was the simplest and easiest way I found to mount the new pump and not have to fight the old boot over it. I cut the sections of the holder and fitted them to the bike and then the pumped slid between them fitting nice and tight. Safety wired it in place and "bob's your uncle"