Re: programing a decoder thats not in a loco


Rich, If all you want to do is re-program the decoder address all you need to do is hook up pins 4 and 8 of the NMRA plug to the programming track (normally the black and red power pick-up wires). However, you cannot read the decoder without having a motor (or resistor load) also attached. You do not need to read the decoder in order to blindly program CVs on the programming track.


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