The reader added:
Here are some pictures of the progress on the conversion of the Penn Flyer ready to play to G scale.
As You can see a pill bottle is the exact size to hold the speaker which I plan on moving to the tender so as to make room for a smoker. I used mini 9 V green LEDs that made a perfect fit where the plastic green inserts were. I cut off the tips and carefully step drilled the remaining hole until the the wires would fit. They were tight as they had tiny resisters attach so I took a round mini file and filed out the lower portion that had some meat on it and oblong the hole until the wires passed through. I super glued and tapped into the head light and provided a plug so I could remove the front over of the boiler if needed.
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