I've created a forum for english speaking folks as well, just if you need
https://modwerkstatt.com/community/general/

Ah sorry, we are in TPF1 Workshop, yes that's ok then :) Was my fault.

I found the code group in kesselwagen_1950.mdl from the game files from Urban Games.

I am playing/modding for TF1. I will put future queastions on a forum.

Are you sure it's the Indicator mod? There are no groups/grp in TPF2.
I would recommend to get your problem into a forum, comments are not the best place for it

Keep getting this problem, do you know of any other mod that used these signals? Mayby I kan find the problem by lokking at anohter example. Another question, should I count these also, like a mesh?
{
id = "vehicle/waggon/kesselwagen_1950_lod0_bogie.grp",
transf = {
1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, -4.8255, 0, 0, 1,
},
type = "GROUP",

},

https://www.transportfever2.com/wiki/doku.php?id=modding:vehicleadvancedtopics&s []=backforwardparts#railvehicle

as written before you need to count your mesh entries. Each appearance of {
materials = { "some_material.mtl", },
mesh = "some_mesh.msh",
transf = { 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, },
},
counts as one. So if you have 3 blocks of that and then the end signal, the id of the signal is 4 and you write backForwardParts = { 4 },
If you have 10 blocks and then the signal the id you need is 11... and so on

Thanks for your help, but I don't get it to work... I have made this code:
railVehicle = {
topSpeed = 160,
weight = 18,
configs = {
axles = { "vehicle/waggon/hbi1/lod_0_w1.msh" },
backForwardParts = { 12 },
backBackwardParts = { 13 },
},
soundSet = "waggon_freight_modern"
},

But somehow it seems to do nothing. I have tried all sorts of numbers for { XX }, but always with the same result, the end signals stay visible. I have looked at the code you used for the DRG/DB Chalk Bucket Car mod, but I am unable to find the problem. Do you have any suggestions?

you'll need to add the ID of the signal mesh in backForwardParts = { XX }, (where XX is your ID) ID counts up from 0, every children and every mesh entry increments it by 1

I have a question. I am trying to make a mod with waggons including the train end signals as described. But the signals show up always, not only on the end of the train. Could you explain how to make the signal only to be displayed at the rear of the last waggon? Your help would be appreciated!

Die "sanduhr" ist international. Nicht nur deutschland/österreich.
Aber nettes Detail. Danke

Cargo trains in germany use this instead of a light at the end of the train.

http://www.bahnbilder.de/bild/Schweiz~Sonstiges~Schilder/86595/die-deutschen-zugschlusstafeln-werden-auch-grenzueberschreitend.html

I hope I can just use this without knowing what it is!