Train Control Systems K1D4 decoder installed in Kato "Gevo" ES44AC N Scale locomotive. Performed by TCS

Here is the locomotive with the shell on.

After you remove the shell you will see a DC lighting board like the one above.

Slide the lighting board towards the back of the locomotive and lift to remove it.

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.

Reverse the motion you used to remove the lighting board to install the decoder. Make sure that the copper tabs on the decoder cover the motor tabs in the locomotive.

Above photo shows completed installation. This is a very easy board replacement installation.

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