I'd like to temporarily remove the decoder in my On30 Forney. I have a reversing track setup that i eould like to run the Forney on but the controller only works on analog. Yes, I know the Forney will run on analog but the problem is that the reversing controller will not function properly if there is a decoder in the engine. If there is a decoder in the engine it will run past the stopping points and run off the track.

I see on the cut sheet that came with the engine it shows an NMRA jumper board and they say that it can be installed in place of the decoder. When I took the cover off of the bottom of the engine that has the DCC logo on it I did not see a typical 8 pin decoder connection. The cut sheet for the engine also does not show where the factory decoder is installed. Before I open up the tender I'm curious if anyone knows if there is an actual 8 pin connector in this unit and if so, how to get to it. I have an 8 pin jumper board that I can use. Any help would be greatly appreciated.

I'm trying to install a Digitrax DCC decoder in a Eureka & Palisade Large Scale 4-4-0. The Bachmann drawing shows the stock DC wiring and they include a drawing for wiring in a DCC decoder.  The DCC drawing shows the wiring for a Lenz 1835 decoder. I connnected the track power and motor leads to my Digitrax decoder and the thing runs fine. What I can't get to work is the lighting.

I printed out the manual for the Lenz decoder to compare with the Digitrax decoder and as far as connecting up the head light and firebox lights, it seems like that information is not correct.  They show A,C & D on the Lenz decoder being connected to the black wire and terminals 3&4 on the Bachmann factory board. If you compare that to the Lenz manual, it looks like they are wiring the forward lighting output to the black lead and C&D on the Lenz decoder appear to be function outputs.  That kind of makes sense but they don't show the blue + wire being used. In my past experience, the blue wire needs to be used to complete the circuit.  Nothing is shown on the Bachman drawing as to what terminals 3&4 do.  The black wire on the Bachman drawing looks like it goes to the "-" side of the headlight.

Does anyone know the correct wiring for the lighting. I could easily cut the headlight wire and wire it directly to the decoder with a resistor but the firebox lighting would be a little more tricky since you can barely get to those wires due to them being on the side of the board that is still pretty much in the boiler when you slide the board out.  I have to believe that since Bachmann shows the loco wired to a decoder that the lights can work properly with a decoder.  I think something got lost in the translation of the drawing.  I'd like to not have to cut the firebox light wires and hard wire to the decoder if possible. Any help would be greatly appriciated. Thanks