I have a question if someone knows the answer it would be a big help to me....I recently took the shell off this steam engine to replace the wick...I notice in front of the smoke unit is a small bulb mounted that lights up when running...I cannot figure out why it is there...it does not show when shell is on.... not a headlight or marker light or number board light...it seems to do nothing but sit there and light up when engine is running....you would not even know there was a light bulb there until you take off the engine shell.....anyone know why MTH mounted that light there. Thanks for any help on the subject... Jake
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