Do you have any idea of adding wiring harness to the schematic diagram?

A quick caution about using 5.99. That version is pre-release for 6, and changes every day. Most of the changes are to finalize new features and fix existing bugs. Occasionally the changes are to fix newly introduced bugs. Projects saved in 5.99 are not able to be opened in the stable versions (currently 5.1.10) because of new features in the PCB file format and a completely new schematic format.

I’m not saying “don’t used 5.99”, rather I just want to set your expectations properly. I, personally, would advise one of two approaches for using 5.99:

  1. Try out the latest and if there are bugs that prevent you from doing work, upgrade as newer nightly releases roll out. But if you are happy with it, hold off on upgrading until you see a feature that you want to use being announced in the Post-v5 new features and development news thread.
  2. Install each new nightly as they become available and participate in the KiCad Gitlab page to report new bugs and comment on already reported bugs. And if you program, maybe help troubleshoot and/or fix bugs (but you should probably join the developers mailing list so you don’t duplicate other people’s effort.)

Welcome to the forums, and:

Well, your English is better than how I would speak or write in what ever language you natively speak in (I’m not sure since you don’t give a location in your profile to use as a hint to your language). Mostly because I’m only fluent in English, and only know a few select words in other (mostly European) languages. I also rely in google translate more than I should when reading other languages. :wink: