It’s the off position that I was thinking about. I haven’t tested the switch myself to confirm either way. I know you (bartamos) understood what I meant, but for the sake of the OP, I will explain my prior post.
We know, with the ignition switch in the “On” position, all three terminals are electrically connected. My questIon is, when the switch is in the “Off” position, are all three terminals isolated from each other? If two of the terminals are still electrically connected (in the “Off” position), then it could be easily be wired that turning the switch to the “Off” position would not disconnect power to the coil. Thus the drain on the battery.
If the switch in the “off” position does isolate all three terminals as you say, then my point is moot.