Very nice to see completely preserved the classification lights, makes the locomotive much more beautiful!
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What are the blue lights for? Beautiful shot though.
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Not sure about the blue class lights, maybe old Canadian version of green? BC Rail units appear to have blue also (see Tim Gobeil's photo ID #260585 as an example). Put an amber bulb behind them and they'd shine green;-). Newer versions (like on GP38-2s - ID #222130) appear to be green.
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