Wired furni doesnt work unless someone else is already in the room, i think (Wired trigger for user entering room doesn't work for first user to enter, or atleast i found this when trying.)
You need to follow the section rules..
http://devbest.com/threads/gta-sa-multiplayer-section-rules.8605/
Include more information and screenshots please :D
Yes, It has been known about for a long time.
Developers say it will not al change at once, instead they will change certain parts at a time. For example - they just did the help tool.