actually it is very easy just put the engine in some kind of cradle to hold it upside down . then attach 2 alligator leads red n blk hook red form transformer Lionel red to center rail or roller of engine then connect black wire from black connector on transformer to engine ground metal frame,. making sure red lead does not short to frame while connecting red to roller that does not connect to frame at same time as roller. then just run engine as usual. make sure engine smoke switch is turned off before you run engine!
Alan
