What is minimum electrical required to start my car?

I asked my brother... he said he has GM hei module and will bring it over tomorrow... ok see if I got this right(wiring part).... battery negative to motor ground... battery hot to starter... Battery hot to toggle switch to solenoid... battery hot to GM module that goes to the distributors both side of wires..... flip toggle switch and it should attempt to start and if does flip toggle switch back and it should stay running... unhook battery and it should die????? do I have this correct???
follow Dels (67dart273) advice , he is the man for this stuff, he's bailed me out a few times