Here is a Converted US Flatbed trailer mod that can automatically load the in-game square and round bales as well as all the pallet items such as seed, fert, pig food, etc. This is fully tested and functional in SP, MP, & Dedicated Servers.
All credit on the original Farming Simulator 15 mod goes to oxtar. I was able to convert it to Farming Simulator 17 and add the universal autoloading feature as well as the tension belts. I am sure oxtar will come out with a fantastic trailer for Farming Simulator 17 and look forward to it, but until he does, please enjoy his converted trailer.
oxtar (original mod from Farming Simulator 15)Bigdaddy012678 (converted it from Farming Simulator 15 and added tension belts & Autoload feature)HoT online Team For the Univeral Auto Loading script
US Trailer With Autoload Feature v2.0