The interlock is on its way.
I'm sure the bike wont start without it as it decides from clutch switch and sidestand input etc. if it's safe to spark the plugs. I would have thought that it refuses to crank the bike as well but apparently you can cranked it without? did you bypass it to get it to crank as the relay that controls your start button gets ground over the interlock box.
I'm just not too sure what the connection in to the ECU from the interlock does but I suspect it will also tell the ECU to NOT inject any fuel when the sidestand is out for example.
So i'm wondering how you got the starter to spin in the bike as it is now?
999 LC8 Rat-Rally custom - 500 EXC - XR666R '85