In this step we will attempt to add a few of the
remaining locomotive details that are now missing from our SD-40-2 project.
Install the two steps found at the front of the cab on the fireman's side and
the one step at the edge of the battery box on the engineer's side. Using
the Cannon instructions, build and install the electrical cabinet filter box.
Next, install the spare knuckle box, horn, antenna, lift rings, cab vent, DB
vent and curved grab iron on the front of the model.
