TCS MC1 Decoder Installation for N-Scale Bachmann Spectrum SD45
This is the Spectrum SD-45 Diesel locomotive from Bachmann. This locomotive comes DCC ready as is and because of this , installing our M1 decoder is fairly difficult. These pictures above are the SD-45 before any modifications are made. The entire installation will be done on this back end of the locomotive. First, the LED wires need to be shortened to make room for the decoder. Be sure to leave some slack in the wires and not shorten them too much. Also remember that LEDs are directional and the wires need to be reattached to the same pads that they came off of.
Using our M1 decoder, secure the decoder underneath
the back end of the board between the resistors and the LED at the far end. Run
the M1 wires straight out through the LED wires to keep the wires untangled.
Then pull the wires up and over the end of the main board to line each wire up
with its corresponding pad. Double check the ordering of the wires to install
the decoder correctly and make the wires as tight as possible without
interfering with any other components.
*Although it isn't necessary, the yellow/orange capacitor on top of the main board can be removed because we have a similar part on the M1 that will do the same job.