I need to know how to wire for the running of 2 trains on one 4x8 layout.I know you have to use a block in order to due this but how do you wire for it and do you need more than one selector to do this or what do you need.I am wireing this for DC and the track plan that i am useing said that this could be done,but i am not sure where to start.Also do you have to gap the rails or can you just use plastic rail joiners and where should they be placed.I am not very good at soldering so if i don't have to i would rather not.I do have the 2 power pacs that it say's you need but just not sure where to start.Please help with this problem and all suggestions would be great.