10-19-2012, 08:19 AM
Installing DCC in the model should not be difficult.
I haven't seen the inside of a GP20 in a while, but if I remember right, the model has wires leading up from the trucks to the circuit board, and from there, wires radiate out to the motor and lights. This set up makes it particularly easy to install DCC.
When installing DCC in a locomotive without a plug, you can usually get rid of the PC board, since it usually only has a few diodes or other equipment to cancel out "noise", things your decoder already has. This makes some more space in your model.
Next, you're going to want to solder the red decoder wires to the truck pick up wires on one side, and the black decoder wire to the other. the orange and gray (Fixed!) wires go to the motor. The lighting wires are attached to their respective lights, and the blue wire is attached to each (it is the "common" wire).
You don't necessarily have to worry about the red and black or the grey and orange wires being wired in the correct order, since simple changes to CV 29 can allow you to set the locomotive which ever way you want to be the "Front" (don't know if you have a high-hood or low hood GP20).
I haven't seen the inside of a GP20 in a while, but if I remember right, the model has wires leading up from the trucks to the circuit board, and from there, wires radiate out to the motor and lights. This set up makes it particularly easy to install DCC.
When installing DCC in a locomotive without a plug, you can usually get rid of the PC board, since it usually only has a few diodes or other equipment to cancel out "noise", things your decoder already has. This makes some more space in your model.
Next, you're going to want to solder the red decoder wires to the truck pick up wires on one side, and the black decoder wire to the other. the orange and gray (Fixed!) wires go to the motor. The lighting wires are attached to their respective lights, and the blue wire is attached to each (it is the "common" wire).
You don't necessarily have to worry about the red and black or the grey and orange wires being wired in the correct order, since simple changes to CV 29 can allow you to set the locomotive which ever way you want to be the "Front" (don't know if you have a high-hood or low hood GP20).
Modeling New Jersey Under the Wire 1978-1979.
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