Flip Face/Party flag Thomas check

Looks very cool. I have never seen the insides of one of these but I am curious if its been re-wired too as looking through the cab windows (last pic) it looks as if the green wire might have a red crimp connector on it.

I may open it up, but the use of green and yellow wires seems foreign and European to me...as it did come from Poland. Hopefully Jdogman will take a look and have some ideas too?