Loksound 5 DCC decoder, Scale Sound System speaker and LED install in Athearn RTR SD40-2 (DCC ready)

This is a how-to video of upgrading a 10 year old "blue box" Athearn Ready To Roll SD40-2 which came "DCC Ready" when it was introduced in 2015. This video demonstrates the installation of a Loksound 5 DCC decoder with a dual Scale Sound System speaker set and LED light upgrades.
This video is not a paid promotion for any product. All items were purchased through a train vendor. The opinions expressed are solely that of the video creator. The creator is not responsible for any damage or issues caused trying to replicate the techniques demonstrated in this video.

[@jpkarenko6952]

Nice work! I have the SSS speakers in most of my sound-equipped locos. They are so efficient, I found it necessary to turn down the overall volume. ESU tends to run the default volume "wide open." I'd suggest about 50%. Also, some roads make the top (cab) light run as a MARS. I don't know if ICG did this, but the decoder sfx can make that happen.

[@PantherLineProductionsofOhio]

How much lighter would you say the locomotive got after losing those weights? I wish Athearn would do upgraded chassis like they did with the SD40T-2/SD45T-2 series locos.

[@ck7813]

Thank you, while I did not do a pre- and post- weight assessment of the locomotive, the weight loss is negligible. The front weight is probably less than an ounce and the rear may be 1 ounce. While the speakers to add weight back to the locomotive, they are certainly not the weight of the lead. Overall, you will not notice.