Left the trains last night. Came back this morning and the system kept showing a short. I've finally traced it to one of the axles on one of the trucks. For the life of me I haven't been able to figure this out. Looking for suggestions.
If it's an Athearn clone axle, the two tub ands could be touching inside the gear, causing a short. Check to make sure the wheels are in gauge, and haven't gotten pushed together.