Hello.
I have added the last parts on my etched brass 2-axled automobile transport wagon of the SNCF, Epoche III. These are the levers (Verbindungsgestänge) - out of etched nickel/silver connected with the main levers (Umstellvorrichtung), which connect the following:
1./ The first one (red arrow) with the distributor (Steuerventil).
2./ The second one (blue arrow) with the lever -"empty / loaded" (leer/beladen).
3./ The third one (purple arrow) with the lever (Bremshebel) of the brake-cylinder (Bremszylinder).


The wagon now is complete - 100%.
As I mentioned, I won't paint it, or add any decals, as I prefer, the brass color. However, when plastic models are upgraded either by finescale / and or P87 standards, then the parts added (either operational / and or fine/ and or exact), needed to be painted. I agree with this.
Thanx
Dimitris
P.S. I will post a sketch of the model with the last parts I have mentioned from Gerard HUET.