No time to go in the workshop due to a cold and a quite full work schedule. So I work on the wiring diagrams by adding the intercom, VHF-NAV and transponder files. They can be uploaded in the following article.
After having drawn the circuit I pulled the VHF and transponder harnesses out of the box, and surprise they were not wired as I would have done it especially with the wiring of the shields. Without doubt the harness maker is correct so I will ask him what to do about this little snag.