Thanks itchboy. But I would like to receive a step-by-step answer.
For this, I will outline in more detail what I did.
In the original LAmod, I replaced the WATERTENDER with my car, but I kept the original names in the Models and Prototypes folders the same to make the work easier.
In the editor, when on the TLF WATERTENDER model, no hose connections appear, although I did not touch all the names. After that, reading various articles on this topic. He created a new prototype in the water_tender_hose_connections_1 editor and he GTF, added 4 children and named their connector 1-4, also in the attachfirehose file, changed the path to const char OBJ_WATERTENDER_CONN [] = "mod: Prototypes / Vehicles / 06 Objects / water_tender_hose_connections_1.e4p"; Help please what am I doing wrong?