Back again! Could someone suggest where to look for the problem when an engine runs over a particular Gargraves uncoupler track, and as it crosses the magnet bar, sparks are experienced at the drive wheels and it sounds like the magnet is trying to activate? The uncoupler works as it should when used to uncouple cars. The engine is one just had an installation of a ERR CC. Its functions are working fine, except the front headlight stays on all the time. Other locomotives do not cause this to happen. I am unable to track down the cause. Thanks.
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