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Can anyone advise me on digitrax decoder installation in a rivarossi Hudson or challenger steam loco. I've connected the black lead to the trailing truck rivet for the right rail side pickup. Then I attached the red lead(I think it comes from the frame plate) to the left rail side pickup. the grey and orange leads then connect to the proper motor hookups. The blue light lead runs to the trailing truck rivet and the white light lead runs back to the lamp. I don't think the motor is properly isolated but I don't understand how to remove the motor. Can anyone offer advise I haven't seen any articles on this subject.
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