I have for some time now been working on a solution for getting light and power to my train wagons without it being to visible or demanding modification to more Lego elements than absolutely necessary.
Here is the result:
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The result
For this example I have used one of the DSB wagons that can be downloaded on this site.
Through some trial and error I have found that the best solution is to put the wire through
the turntable and into the wagon.
To do this I needed to modify the boogies to make room for the wires.
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The brackets below is the only elements I had to modify for this wagon, to make access to the wires.
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In order to make this solution independent of the direction of the wagon I put - at the bottom of the magnet og + at the top.
This only works with the magnets shown in the pictures.
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Behind the buffer I added a 2x2 inverted tile to make the cobber tape stick.
On the bottom of the boogie I added the coppertape so that i dont have to hae a wire from the magnet to the turntable.
An other advantage of the copper tape is that it fits in between the elements.
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In the inside of the wagon I added the copper tape to get power to the other end of the wagon and to get power to the light.
This minimizes the need for wires inside the wagon.
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After a bit of soldering - here is the finished result.
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All instructions are created with LDCad, LPub3D and the LDraw Library of Parts.