At first, install the CAT.rwp file

then copy the folders Electric and Passenger from

C:\Program Files (x86)\Steam\SteamApps\common\RailWorks\Assets\RSC\ClassME146Pack01\RailVehicles 


to

C:\Program Files (x86)\Steam\SteamApps\common\RailWorks\Assets\RSC\ClassME146Pack01\RailVehicles CAT


Decline ALL reports to overwrite.



Finally delete the folder Engine at

C:\Program Files (x86)\Steam\SteamApps\common\RailWorks\Assets\RSC\ClassME146Pack01\RailVehicles CAT\Electric\ME146



To use the Repaint, tick in the Editor RSC -> ClassME146Pack01.

The dosto cabcar is listed as CAT DABpbzkfa and CAT DABpbzkfa nd

and the passenger dostos are listed as CAT DABpza, CAT DBdpza and CAT DBpza.



At the end please clear the cache. Main Menu -> Settings -> Tools




Enjoy!