N Scale Kato EMD SD45 with TCS K1D4 Decoder installation. Performed by TCS.

This is a very simple drop in board replacement installation.

First remove the shell. Do this by gently prying up underneath the steps a little at a time. Going back and forth first prying the front then the back. Evenly work off the shell. Below is a picture of the frame with the shell removed and the original lighting board installed.

Be sure to apply an insulator (here we used Kapton tape, but eletrical tape would work as well) over the frame to prevent the motor tabs from shorting on the frame.

Photo below shows K1D4 decoder installed. You will need to file the inside corners where the decoder fits over the frame to the right of the motor tabs, just a slight amount of filing is needed.

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