This installation of TCS A6X Decoder is for HO Scale Athearn Genesis F2A Freight and was performed by A.G. and J.F.
This installation is rather involving because all the wires are black and easily misapplied. It is also easy to touch the soldering iron against the insulation of one or more of the wires because they are bunched together.
Here is a picture of the locomotive with its shell taken off and TCS A6X decoder installed. This locomotive originally comes with DCC plug where you could connect our other decoders such as T4X or T6X. The reason that A6X was chosen is that this decoder has built in 1.5V voltage regulator so you do not have to worry about selecting appropriate resistor values. It is worth of mention that using A6X gives you the option of controlling every single light separately with function buttons. This locomotive has a highly detailed. Four light bulbs are used on the front and one one the back. When performing this installation, one needs to be very careful not to melt the insulation on any wires. This would expose the wire and lead to shorting out the bulbs and damaging the decoder. Problematic spots are marked in a red and a blue in the picture and those are the points where one needs to pay a lot of attention to when putting the shell back on the chassis so that no wiring is pinched and damaged.
When the installation is successfully finished, the beautiful light effect can be seen and the engine runs quiet and smooth.