Idea to tell if one of your exterior lights are out

[SilverMayne]

You can use fiber optics strands to transfer light the from the exterior lights to interior of the vehicle. When no light shines through you'll know you may have a short or a burnt out light. My uncle did this to an older 80s Ford car.

[WopOnTour]

You can use fiber optics strands to transfer light the from the exterior lights to interior of the vehicle. When no light shines through you'll know you may have a short or a burnt out light. My uncle did this to an older 80s Ford car.

FYI it's far easier for the rear zone module that is completing the electrical circuit in the first place to internally monitor a voltage drop that would be representative of a functional bulb element. Just about all modern cars use such as system. In fact many are smart enough to flash a different bulb once a bad signal filament is detected. (an sets a diagnostic fault code to assist the technician in isolating to the root cause)

While I find your fibre optic idea and other web research (rod-less engines, round and square CVT transmissions etc) somewhat amusing, I fail to see what they have to do with the engineering on the Volt. (especially odd since many of these Volt details are pretty much firmed up)
Are you trying to secure a job? or maybe for your uncle?
WopOnTour