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Friday, February 22, 2019

Digitization of a BB 67000 - Part 2 - Lighting kit

This is the second part of the digitization focusing on getting better lighting for the engine (see here for part 1).

Wiring the lighting module


There are 3 wires to solder: blue (BL), red (RO), and white (BC). The instructions are rather clear on the wiring.


It does not say on the instructions, but the wires must be soldered as shown above. The connectors are pointing up, so the wires would otherwise have to be folded. 




Now, I put the decoder in place and we are ready for some testing.



Testing the lighting module


The white lights for one direction:


And the red lights for the other direction:


In a video:


Now, testing both sides:


And the video:



Installing the lighting module


This is when I realized this body needs a 3-light module and not a 2-light module. I switched to another body from BB 67382 (Lima reference 208576).





Below, on the left side, this is a 3-light engine. On the right side, this is a 2-light engine.


One thing not mentioned in the instructions is that as you remove the light guide, it will leave an empty space inside the body and will not look nice when looking towards the front of the engine. I, therefore, decided to cut the 4 small pieces of light guide on each side and glue them in place. They should be flush with the body.




I then used Super Glue to glue the light circuit board with the 3D-printed brace:



The next step is actually a bit tricky; I followed the suggestion from the instructions to use double-face tape to position the lighting module on the body of the engine. I've tried some clear and very thin tape, but it would not be sufficient contact between the module and the body. I opted for a much thicker tape that is used for frames. Look below for the white tape:


A quick test to make sure everything works:




Now, when I tried to put the body and the chassis back together, I had to force quite a bit. This is because of the thickness of the white tape and ultimately I had to use a flat screwdriver as a lever:


And that is it!

The outcome


Here's the final result: