Installing the Interlocking signals

I started installing the signals for the Iowa Scaled Engineering  IIAB (Interlocking in a Box) today.

The holes for the signal wires needed to be a bit bigger to allow for the plug on the Atlas Type G signals.  The bases of the signals are not very wide and did not quite cover up the holes, so a friend told me to add a piece of thin styrene under the bases to hold the signals and cover the holes.  

After sizing the styrene a bit bigger than needed,  I drilled a hole for the wires and cut a slit so I could slide it under the base.  I then glued it to the bottom of the signal base with MEK.  I also decided to drill four holes, one in each corner to allow for Atlas track nails, these will hold the base in place, but lose enough that if I bump them, there will be some give.

I think they are a little taller, but not by much. 

I placed them about 10" from the diamond, the one on the left kind of set the placement due to the house track siding, but I think this will still be ok.

Next I'll paint them a dark green and cover them with some ground foam to hide the styrene bases.