I think that's exactly right.
IIRC I got those SIMCONNECT Vars from within Developer Mode (Tools -> Behaviors)
I think they are correct, since assigning button presses to them results the breaker tripping/resetting in the virtual cockpit.
But in SPAD Data Monitor 'CIRCUIT CONNECTION ON:40' isn't changing state.
Same for 41,42,43,44,45.
I'll look at Dev Mode to see whether the Vars are changing state there.