Waiting to complete the glass cockpit panel with the cover, I decided to refine the software involved in the startup panel, just to make it more real...
So, with a little bit of patience, I wrote down some SIOC code snippet and what I got is:
In a few words, after pressing the engine start buttons, the engine start and fuel pump leds light up and, when the engine is running, the generator become active and START and FUEL PUMP leds automatically switch off.
I'm not so sure that the real procedure is the same as mine but now is certainly closer to the reality
Email me (marco(at)mylearjet45.net) if you would like to get this SIOC code.