Installing one wire alternator

Worth noting that while the starter terminal is a convenient place to connect for 12V power, it can be a problem if you are using EFI or other digital electronics that need to be powered while starting. You get a significant voltage drop through the cable plus a lot of extra electrical noise while cranking. I had an EFI setup wired like that once, and redoing the wiring so it took 12 volts from the other end of the starter cable at the battery helped with several startup issues. Less of a problem if you're running a carb with a non-exotic ignition.