What should I add to my config to list the carbose wagon? I want my players to only manually place radios so do I need to include it alongside all other vehicles and set it 0.0 value or nope?

Just unload the plugin 
than delete the data files and load the one in the link and you are done

greedz

Rustysmokers

here is the file without buttons and carboose support

dont forget delete the data files of carradio in oxide/data

https://www.dropbox.com/scl/fi/4yxwhdutdof1g21mfllbq/CarRadio.cs?rlkey=xatdvxk860mytaz6qpsgwbci0&dl=1

greedz

Thanks for the edit, works great