Joustra F-P-AN-AM HELP

[ClassicBoatworks]

All,
I have a Joustra F-P-AN-AM 6 propeller airliner
The plane is in excellent condition but I cannot figure out how the lights were wired.
I have posted pictures at http://www.classicboatwork.com/joustra/joustra.html
This is a very rare airplane and I can find almost no information so anything you have is appreciated.
I believe the plane is from the 1930s
I found a couple body's in poor condition on eBay France but they look the same from what I can tell.
It appears there may have been a battery box but I have not seen one.
I would like to make the lights work but am a bit stumped.
Your ideas are requested

In the photo with the piece marked Switch there is no indication of prior wiring. I cannot figure what its purpose is.

It is a very cool plane when all those propellers are spinning!

Thank you,
Dean

[alas]

You have a version of the 'croix du sud' by Joustra - produced between the 30s and 50s !
http://www.historytoy.com/Joustra-Airpl ... 2zlnUxP6AY

[ClassicBoatworks]

You have a version of the 'croix du sud' by Joustra - produced between the 30s and 50s !
http://www.historytoy.com/Joustra-Airpl ... 2zlnUxP6AY

Thanks! That is the first one I have seen.
I added a battery box so the lights work, fixed one broken propeller on one engine and cleaned it up.
Very cool... you can see it here:
http://www.classicboatwork.com/collecti ... other.html