High all I am hoping to purchase RailMaster eLink system and will experiment with a small layout similar to the one shown on the Hornby RailMaster video What items do I need to achieve basic operations such as controlling points ,lights etc and how are they electrically connected to the eLink controller every video I have seen seems to focus on the software but none seem to show the wiring schematic of the system Also what is the difference between the track connections and program connections on the back of the eLink controller .