These are the two stock combine harvester header trailers from FS15.

I have added the objectAttacher script from FS13 (seems to work ok) to secure the headers in place during transportation.

V1.1

- Fixed Issue With Rear Wheels Not Turning

Press 'O' to toggle lock on/off (see help text).

Hope this helps until Giants get their dynamicAttacher issue fixed.
Credits
Giants
Geri-G (edit PeterJ) - objectAttacher script
Amiga_Sean