I have been working on the throttle levers and have eventually sorted through the maze of wiring that is squeezed inside the first picture was my first attempt the second picture is where I am at now with just those last few wires to connect up. All the switches even though their basic task is an on\off command they are all wired to on\on I presume that is to keep the aircraft system informed of the switch position rather than the system having to presume that the switch is off because without the off signal the switch could be on and failed and the aircraft system would not know..