I made a pylon and it connected fine to three machines. You did put power from the main on the pylon first, right?
The only things I found were that my lvl 2 furnace was orange and not blue any more and that the cable to a machine from main was floating in the air. I didn't find a way to reset that so one power source from main was not usable any more.
Researched tier 2 but after loading it wasn't researched any more. Not sure if it's needed for every item but then we need a LOT more blueprints. =p
One blueprint box at a cave looking structure was not lootable.
The snowmobile resets to its default position after you load a game, so just walk over there and get it again for now.
P.S. If you load and a pylon doesn't want to cooperate, move it little bit. =)